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• • • •

High-performance machining higher cutting speeds outstanding tool life universal application in a wide variety of materials

Pionex

THE NEW GENERATION THREADING TOOLS

GÜHRING – YOUR WORLDWIDE PARTNER


Pionex

THE NEW GENERATION THREADING TOOLS

Due to a homogeneous cutting edge an outstanding and excellent coating adhesion can be realised.

Tapered thread for perfect chip evacuation.

A

PionexTAP

An enhanced coating system based on hard material glide coating ensures lower friction, an improved chip evacuation and a higher tool life.

S

• • • •

higher cutting rates longer tool lives fewer tool changes reduction of number of tools in operation

The unique material-mix of the Sirius-coating of the mechanically toughhard TiAlN and chemically extremely stable zirconium nitride guarantees a high wear protection and a better chip evacuation.


Based to the modified polygon form the contact surface between tool and functionality area could be optimised. This reduced torque by up to 30 %.

PionexFlutelessTAP

A special surface finish treatment in combination with the TiCN-coating ensures increased wear-resistance.

Increased wear-resistance thanks to the application of a new powder metallurgical base material.

Due to the shank tolerance h6 the new fluteless tap generation can be applied in all standard clamping chucks.

New lubricating groove geometry Thanks to the optimised lubricating grooves the lubricating effect has been clearly improved in the forming lead area.


ISO code P

Steel, high-alloyed steel

M

Stainless steel

K

Grey cast iron, spher, graphite/mall. cast iron

N

Aluminium and other non-ferrous metals

S

Special, super and titanium alloys

H

Hardened steel and chilled cast iron

On the following price and programme pages you will find for every tool recommendations regarding suitability for the application groups and details of max. tensile strength and hardness: optimal suitability limited suitability

Pictograms Tool material

HSS-E

PM

High-speed steel

Tolerance on Ă˜

4HX

6HX

6GX

7GX

6H +0,1

2BX

Thread type Through hole

Cutting direction

Blind hole

L

R right

left

with IC

without IC

Internal coolant

Form

B

Type

Coatings TiCN

A TiAlN

S Sirius

C

E

VA

VA R45

Through hole and blind hole


PionexTAP Blind hole taps Metric threads.................................................... Metric fine threads ............................................. UNC ................................................................. UNF .................................................................. G .....................................................................

p. p. p. p. p.

8 15 19 20 21

p. p. p. p. p.

22 28 30 31 32

p. p. p. p. p.

35 38 41 42 43

Through hole taps Metric threads.................................................... Metric fine threads ............................................. UNC ................................................................. UNF .................................................................. G .....................................................................

PionexFlutelessTAP Fluteless machine taps Metric threads.................................................... Metric fine threads ............................................. UNC ................................................................. UNF .................................................................. G .....................................................................

Technical Section ........................................ p. 45


≤3xD

Thread depth Tool material Lead form

C

C

E

C

C

HSS-E-PM C

C

Surface

A

A

A

A

A

A

A

Cutting direction

R

L

R

R

R

R

R

h9

h9

h9

h9

h6

h6 + HB

h6

HSS-E

Coolant delivery Shank tolerance

BLIND HOLE Thread type = = = =

Neat oil Soluble oil Paste MQL

M

MF UNC UNF G

Tolerance Article no./page 393 p. 8 4629 p. 13 4630 p. 9 4633 p. 12 4634 p. 10 4650 p. 11 4636 p. 14 6HX 4625 p. 8 6GX 4626 p. 8 7GX 4627 p. 8 6H+0.1 394 p. 15 4631 p. 17 4635 p. 16 4637 p. 18 6HX 4628 p. 15 6GX 391 p. 19 2BX 392 p. 20 2BX 395 p. 21 4632 p. 21 -X Suitable lubricant: / / / / / / / / / / / / / /

Group of materials

Tensile strength

Material example

Material no.

P1

Structural and free cutting steels, heattreatable steels unalloyed

≤800 N/mm²

S235JR C15 11SMnPb30

1.0037 1.0401 1.0718

20

20

20

20

25

25

25

P2

Free-cutting steels, unalloyed case hardened steels, nitriding steels

800 1000 N/mm²

S355J2 C60 31CrMo12

1.0577 1.0601 1.8515

15

15

15

15

20

20

20

P3

Alloyed heat-treatable steels, tool steels, high speed steels

800 1200 N/mm²

42CrMo4 36CrNiMo4 X36CrMo17 HS 6-5-2

1.7225 1.6511 1.2316 1.3343

10

10

10

10

12

12

12

M1

Stainless steels, sulphured, austenitic

≤1000 N/mm²

X5CrNi18-10 X6CrNiTi18-10 X8CrNiS18-9

1.4301 1.4571 1.4305

12

12

12

12

15

15

15

M M2

Stainless- and acidresistant steels, martensitic

≤1000 N/mm²

X17CrNi16-2 X90CrMoV18 X2CrTi12

1.4057 1.4112 1.4512

10

10

10

10

12

12

12

M3

Duplex and Super Duplex

≤1300 N/mm²

X2CrNiMoN22-5-3 X2CrNiMoN25-7-4 X2CrNiMoCuWN25-7-4

1.4462 1.4410 1.4501

6

6

6

6

8

8

8

K1

Cast Iron

300 HB

EN-GJL-150 EN-GJL-250 EN-GJL-300

0.6015 0.6025 0.6030

20

20

20

20

25

25

25

Spheroidal graphite iron and malleable cast iron

EN-GJS-400-15

350 HB

EN-GJS-600-3 EN-GJS-700-2

0.7040 0.7060 0.7070

20

20

20

20

25

25

25

1000 N/mm2

EN-GJS1000-5 EN-GJV250 EN-GJV400

10

10

10

10

15

15

15

10

10

10

10

12

12

12

20

20

20

20

25

25

25

20

20

20

20

25

25

25

20

20

20

20

25

25

25

10

10

10

10

15

15

15

3.702<5 3.7115 3.7165

3

3

3

3

5

5

5

2.4610 2.4668 2.4634

2

2

2

2

3

3

3

P

K K2

K3

ADI GGV

N1

Aluminium and wrought alloys

≤450 N/mm²

N2

Al cast alloys

≤600 N/mm²

N N3

Magnesium alloys

and copper N4 Copperalloys

S

H

350 HB

≤500 N/mm² long-chipping

Al99,5H AlMgSi1 AlZn4,5Mg

3.0250 32315 3.4335

GD-AlSi5Cu1Mg

3.2134 3.2162 3.2373 3.2581 3.5812.08 2.0250 2.0332

GD-AlSi8Cu3 G-AlSi9Mg G-AlSi12 GDMgAl8Zn1 CuZn20 CuZn37Pb0,5

CuZn39Pb2 CuZn43Pb2 Ampco N5 Copper special alloys ≤1400 N/mm² long-chipping PMMA, POM,PVC Plastics N6 [Thermo-, Duroplastics] short-chipping Pertinax Titan Titanium and ≤ 1200 TiAl5Sn2 S1 Titanium alloys N/mm² TiAl6V4 short-chipping

S2

Nickel, cobalt, iron alloys

≤ 1400 N/mm²

H1 H2

High tensile/ hardened steels

45 - 55 HRC 55 - 62 HRC

Hastelloy C4 Inconel 718 Nimonic 105

2.0380 2.0410

Recommended cutting speed vc [m/min]


≤3xD

Thread depth Tool material Lead form

B

HSS-E B

B

B

HSS-E-PM B

B

Surface

S

S

S

S

S

S

Cutting direction

R

L

R

R

R

R

h9

h9

h9

h6

h6 + HB

h6

4218 p. 22 4638 p. 22 4639 p. 22 4640 p. 22 4219 p. 28 4641 p. 28 4642 p. 30 4643 p. 31

4644 p. 25

4651 p. 24

4648 p. 27

Coolant delivery Shank tolerance

THROUGH HOLE Thread type = = = =

Neat oil Soluble oil Paste MQL

Tolerance 6HX 6GX 7GX 6H+0.1 6HX 6GX 2BX 2BX -X

M

MF UNC UNF G

Suitable lubricant:

Article no./page 4645 p. 26 4646 p. 23

4647 p. 28

4649 p. 29

4220 p. 32 /

/

/

/

/

/

/

/

/

/

/

/

Group of materials

Tensile strength

Material example

Material no.

P1

Structural and free cutting steels, heattreatable steels unalloyed

≤800 N/mm²

S235JR C15 11SMnPb30

1.0037 1.0401 1.0718

20

20

20

25

25

25

P2

Free-cutting steels, unalloyed case hardened steels, nitriding steels

800 1000 N/mm²

S355J2 C60 31CrMo12

1.0577 1.0601 1.8515

15

15

15

20

20

20

P3

Alloyed heat-treatable steels, tool steels, high speed steels

800 1200 N/mm²

42CrMo4 36CrNiMo4 X36CrMo17 HS 6-5-2

1.7225 1.6511 1.2316 1.3343

10

10

10

15

15

15

M1

Stainless steels, sulphured, austenitic

≤1000 N/mm²

X5CrNi18-10 X6CrNiTi18-10 X8CrNiS18-9

1.4301 1.4571 1.4305

12

12

12

15

15

15

M M2

Stainless- and acidresistant steels, martensitic

≤1000 N/mm²

X17CrNi16-2 X90CrMoV18 X2CrTi12

1.4057 1.4112 1.4512

10

10

10

12

12

12

M3

Duplex and Super Duplex

≤1300 N/mm²

X2CrNiMoN22-5-3 X2CrNiMoN25-7-4 X2CrNiMoCuWN25-7-4

1.4462 1.4410 1.4501

6

6

6

8

8

8

K1

Cast Iron

300 HB

EN-GJL-150 EN-GJL-250 EN-GJL-300

0.6015 0.6025 0.6030

20

20

20

25

25

25

Spheroidal graphite iron and malleable cast iron

EN-GJS-400-15

350 HB

EN-GJS-600-3 EN-GJS-700-2

0.7040 0.7060 0.7070

20

20

20

25

25

25

1000 N/mm2

EN-GJS1000-5 EN-GJV250 EN-GJV400

10

10

10

15

15

15

10

10

10

12

12

12

20

20

20

25

25

25

20

20

20

25

25

25

20

20

20

25

25

25

10

10

10

15

15

15

3.702<5 3.7115 3.7165

3

3

3

5

5

5

2.4610 2.4668 2.4634

2

2

2

3

3

3

P

K K2

K3

ADI GGV

N1

Aluminium and wrought alloys

≤450 N/mm²

N2

Al cast alloys

≤600 N/mm²

N N3

Magnesium alloys

and copper N4 Copperalloys

S

H

350 HB

≤500 N/mm² long-chipping

Al99,5H AlMgSi1 AlZn4,5Mg

3.0250 32315 3.4335

GD-AlSi5Cu1Mg

3.2134 3.2162 3.2373 3.2581 3.5812.08 2.0250 2.0332

GD-AlSi8Cu3 G-AlSi9Mg G-AlSi12 GDMgAl8Zn1 CuZn20 CuZn37Pb0,5

CuZn39Pb2 CuZn43Pb2 Ampco N5 Copper special alloys ≤1400 N/mm² long-chipping PMMA, POM,PVC Plastics N6 [Thermo-, Duroplastics] short-chipping Pertinax Titan Titanium and ≤ 1200 TiAl5Sn2 S1 Titanium alloys N/mm² TiAl6V4 short-chipping

S2

Nickel, cobalt, iron alloys

≤ 1400 N/mm²

H1 H2

High tensile/ hardened steels

45 - 55 HRC 55 - 62 HRC

Hastelloy C4 Inconel 718 Nimonic 105

2.0380 2.0410

Recommended cutting speed vc [m/min]


Taps Machine taps for ISO metric threads Tool material

R

Tolerance on Ø Surface

HSS-E 6HX

6GX

7GX

6H+0,1

A

A

A

A

P

ä

Type

VA R45

VA R45

VA R45

VA R45

M

ä

Form

C

C

C

C

Internal cooling

Article no.

393

4625

4626

4627

Discount group

103

103

103

103

ã ã

S

ã

P

SW d2

H

d1

K N

dk

l2 l5 l1

DIN 371

P d2

d1

SW

l2

dk

l5 l1

DIN 376 DIN 2184-1 DIN 371/DIN 376

d1 M2 M2,5 M3 M3,5 M4 M5 M6 M8 M10 M12 M14 M16 M18 M20 M24 M30 M33 M36 M39

8

P

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

mm

0.400 0.450 0.500 0.600 0.700 0.800 1.000 1.250 1.500 1.750 2.000 2.000 2.500 2.500 3.000 3.500 3.500 4.000 4.000

2.800 2.800 3.500 4.000 4.500 6.000 6.000 8.000 10.000 9.000 11.000 12.000 14.000 16.000 18.000 22.000 25.000 28.000 32.000

2.100 2.100 2.700 3.000 3.400 4.900 4.900 6.200 8.000 7.000 9.000 9.000 11.000 12.000 14.500 18.000 20.000 22.000 24.000

1.60 2.05 2.50 2.90 3.30 4.20 5.00 6.80 8.50 10.20 12.00 14.00 15.50 17.50 21.00 26.50 29.50 32.00 35.00

45.000 50.000 56.000 56.000 63.000 70.000 80.000 90.000 100.000 110.000 110.000 110.000 125.000 140.000 160.000 180.000 180.000 200.000 200.000

4.500 5.000 6.000 7.000 7.500 8.500 11.000 14.000 16.000 18.500 20.000 20.000 25.000 25.000 30.000 35.000 35.000 50.000 50.000

13.500 14.500 18.000 20.000 21.000 25.000 30.000 35.000 39.000 49.000 53.000 54.000 62.000 62.000 73.000 85.000 91.000 102.000 107.000

Code no. 2.000 2.500 3.000 3.500 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000 24.000 30.000 33.000 36.000 39.000

Availability ‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡ ‡ ‡


Taps Machine taps for ISO metric threads Tool material

R

Tolerance on Ø Surface

HSS-E 6HX A

P

ä

Type

VA R45

M

ä

Form

E

Internal cooling

K

ã

N

ã

S

ã

P

SW

d2

d1

H dk

l2 l5 l1

DIN 371

d2

d1

SW

dk

l2 l5 l1

DIN 376 DIN 2184-1 DIN 371/DIN 376

d1 M2 M2,5 M3 M3,5 M4 M5 M6 M8 M10 M12 M14 M16 M18 M20 M24 M30

P

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

mm

0.400 0.450 0.500 0.600 0.700 0.800 1.000 1.250 1.500 1.750 2.000 2.000 2.500 2.500 3.000 3.500

2.800 2.800 3.500 4.000 4.500 6.000 6.000 8.000 10.000 9.000 11.000 12.000 14.000 16.000 18.000 22.000

2.100 2.100 2.700 3.000 3.400 4.900 4.900 6.200 8.000 7.000 9.000 9.000 11.000 12.000 14.500 18.000

1.60 2.05 2.50 2.90 3.30 4.20 5.00 6.80 8.50 10.20 12.00 14.00 15.50 17.50 21.00 26.50

45.000 50.000 56.000 56.000 63.000 70.000 80.000 90.000 100.000 110.000 110.000 110.000 125.000 140.000 160.000 180.000

4.500 5.000 6.000 7.000 7.500 8.500 11.000 14.000 16.000 18.500 20.000 20.000 25.000 25.000 30.000 35.000

13.500 14.500 18.000 20.000 21.000 25.000 30.000 35.000 39.000 49.000 53.000 54.000 62.000 62.000 73.000 85.000

Article no.

4630

Discount group

103

Code no. 2.000 2.500 3.000 3.500 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000 24.000 30.000

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

9


Taps Machine taps for ISO metric threads Tool material

R

Tolerance on Ø Surface

HSS-E-PM 6HX A

P

ä

Type

VA R45

M

ä

Form

C

Internal cooling

K

ã

N

ã

S

ã

P

SW

d2

d1

H dk

l2 l5 l1

DIN 371

d2

d1

SW

dk

l2 l5 l1

DIN 376 DIN 2184-1 DIN 371/DIN 376

d1 M3 M4 M5 M6 M8 M10 M12 M14 M16 M20

10

P

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

mm

0.500 0.700 0.800 1.000 1.250 1.500 1.750 2.000 2.000 2.500

3.500 4.500 6.000 6.000 8.000 10.000 9.000 11.000 12.000 16.000

2.700 3.400 4.900 4.900 6.200 8.000 7.000 9.000 9.000 12.000

2.50 3.30 4.20 5.00 6.80 8.50 10.20 12.00 14.00 17.50

56.000 63.000 70.000 80.000 90.000 100.000 110.000 110.000 110.000 140.000

6.000 7.500 8.500 11.000 14.000 16.000 18.500 20.000 20.000 25.000

18.000 21.000 25.000 30.000 35.000 39.000 49.000 53.000 54.000 62.000

Article no.

4634

Discount group

103

Code no. 3.000 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 20.000

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡


Taps Machine taps for ISO metric threads Tool material

R

Tolerance on Ø Surface

HSS-E-PM 6HX A

P

ä

Type

VA R45

M

ä

Form

C

Internal cooling

K

ã

N

ã

S

ã

H

P d2

d1

SW

dk

l2 l5

DIN 371

l1

P d2

d1

SW

l2

dk

l5 l1

DIN 376 DIN 2184-1 DIN 371/DIN 376

d1 M3 M4 M5 M6 M8 M10 M12 M14 M16 M20

P

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

mm

0.500 0.700 0.800 1.000 1.250 1.500 1.750 2.000 2.000 2.500

6.000 6.000 6.000 6.000 8.000 10.000 12.000 12.000 12.000 16.000

4.900 4.900 4.900 4.900 6.200 8.000 9.000 9.000 9.000 12.000

2.50 3.30 4.20 5.00 6.80 8.50 10.20 12.00 14.00 17.50

56.000 63.000 70.000 80.000 90.000 100.000 110.000 110.000 110.000 140.000

6.000 7.500 8.500 11.000 14.000 16.000 18.500 20.000 20.000 25.000

18.000 21.000 25.000 30.000 35.000 39.000 49.000 53.000 54.000 62.000

Article no.

4650

Discount group

103

Code no. 3.000 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 20.000

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

11


Taps Machine taps for ISO metric threads Tool material

R

Tolerance on Ø Surface

HSS-E 6HX A

P

ä

Type

VA R45

M

ä

Form

C

Internal cooling

K

ã

N

ã

S

ã

P

SW d2

d1

H dk

l2 l5 l1

P d2

d1

SW

l2

dk

l5 l1

Company std.

d1 M3 M4 M5 M6 M8 M10 M12 M14 M16 M20

12

Article no.

4633

Discount group

103

P

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

mm

0.500 0.700 0.800 1.000 1.250 1.500 1.750 2.000 2.000 2.500

3.500 4.500 6.000 6.000 8.000 10.000 9.000 11.000 12.000 16.000

2.700 3.400 4.900 4.900 6.200 8.000 7.000 9.000 9.000 12.000

2.50 3.30 4.20 5.00 6.80 8.50 10.20 12.00 14.00 17.50

90.000 125.000 140.000 160.000 180.000 200.000 220.000 220.000 220.000 280.000

6.000 7.500 8.500 11.000 14.000 16.000 18.500 20.000 20.000 25.000

18.000 21.000 25.000 30.000 35.000 39.000 158.000 160.000 160.000 217.000

Code no. 3.000 4.000 5.000 6.000 8.010 10.010 12.000 14.000 16.000 20.000

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡


Taps Machine taps for ISO metric threads Tool material

L

Tolerance on Ø Surface

HSS-E 6HX A

P

ä

Type

VA R45

M

ä

Form

C

Internal cooling

K

ã

N

ã

S

ã

P

SW d2

d1

H dk

l2 l5 l1

DIN 371

P d2

d1

SW

l2

dk

l5 l1

DIN 376 DIN 2184-1 DIN 371/DIN 376

d1 M2 M2,5 M3 M3,5 M4 M5 M6 M8 M10 M12 M14 M16 M18 M20 M24 M30

P

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

mm

0.400 0.450 0.500 0.600 0.700 0.800 1.000 1.250 1.500 1.750 2.000 2.000 2.500 2.500 3.000 3.500

2.800 2.800 3.500 4.000 4.500 6.000 6.000 8.000 10.000 9.000 11.000 12.000 14.000 16.000 18.000 22.000

2.100 2.100 2.700 3.000 3.400 4.900 4.900 6.200 8.000 7.000 9.000 9.000 11.000 12.000 14.500 18.000

1.60 2.05 2.50 2.90 3.30 4.20 5.00 6.80 8.50 10.20 12.00 14.00 15.50 17.50 21.00 26.50

45.000 50.000 56.000 56.000 63.000 70.000 80.000 90.000 100.000 110.000 110.000 110.000 125.000 140.000 160.000 180.000

4.500 5.000 6.000 7.000 7.500 8.500 11.000 14.000 16.000 18.500 20.000 20.000 25.000 25.000 30.000 35.000

13.500 14.500 18.000 20.000 21.000 25.000 30.000 35.000 39.000 49.000 53.000 54.000 62.000 62.000 73.000 85.000

Article no.

4629

Discount group

103

Code no. 2.000 2.500 3.000 3.500 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000 24.000 30.000

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

13


Taps Oil feed taps for ISO metric threads Tool material

R

Tolerance on Ø Surface

HSS-E-PM 6HX A

P

ä

Type

VA R45

M

ä

Form

C

Internal cooling

K

ã

N

ã

S

ã

P

SW

d2

d1

H dk

l2 l5 l1

DIN 371

P

d2

d1

SW

l2

dk

l5 l1

DIN 376 DIN 2184-1 DIN 371/DIN 376

d1 M5 M6 M8 M10 M12 M14 M16 M20 M24 M30

14

P

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

mm

0.800 1.000 1.250 1.500 1.750 2.000 2.000 2.500 3.000 3.500

6.000 6.000 8.000 10.000 9.000 11.000 12.000 16.000 18.000 22.000

4.900 4.900 6.200 8.000 7.000 9.000 9.000 12.000 14.500 18.000

4.20 5.00 6.80 8.50 10.20 12.00 14.00 17.50 21.00 26.50

70.000 80.000 90.000 100.000 110.000 110.000 110.000 140.000 160.000 180.000

8.500 11.000 14.000 16.000 18.500 20.000 20.000 25.000 30.000 35.000

25.000 30.000 35.000 39.000 49.000 53.000 54.000 62.000 73.000 85.000

Article no.

4636

Discount group

103

Code no. 5.000 6.000 8.000 10.000 12.000 14.000 16.000 20.000 24.000 30.000

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡


Taps Machine taps for ISO metric fine threads Tool material

R

Tolerance on Ø Surface

HSS-E 6HX

6GX

A

A

P

ä

Type

VA R45

VA R45

M

ä

Form

C

C

Internal cooling

Article no.

394

4628

Discount group

103

103

K

ã

N

ã

S

ã

H

d2

d1

SW

l2

dk

l5 l1

DIN 2184-1 DIN 374

d1 M6 x 0,75 M8 x 0,75 M8 x 1 M10 x 1 M10 x 1,25 M12 x 1 M12 x 1,25 M12 x 1,5 M14 x 1,5 M16 x 1,5 M18 x 1,5 M20 x 1,5 M24 x 1,5

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

4.500 6.000 6.000 7.000 7.000 9.000 9.000 9.000 11.000 12.000 14.000 16.000 18.000

3.400 4.900 4.900 5.500 5.500 7.000 7.000 7.000 9.000 9.000 11.000 12.000 14.500

5.20 7.20 7.00 9.00 8.80 11.00 10.80 10.50 12.50 14.50 16.50 18.50 22.50

80.000 80.000 90.000 90.000 100.000 100.000 100.000 100.000 100.000 100.000 110.000 125.000 140.000

8.000 8.000 11.000 11.000 14.000 11.000 16.000 16.000 15.000 15.000 16.000 16.000 16.000

30.000 30.000 35.000 35.000 39.000 40.000 40.000 40.000 40.000 44.000 44.000 44.000 48.000

Code no. 6.004 8.004 8.005 10.005 10.006 12.005 12.006 12.007 14.007 16.007 18.007 20.007 24.007

Availability ‡

‡

‡

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‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

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15


Taps Machine taps for ISO metric fine threads Tool material

R

Tolerance on Ø Surface

HSS-E-PM 6HX A

P

ä

Type

VA R45

M

ä

Form

C

Internal cooling

K

ã

N

ã

S

ã

H

d2

d1

SW

dk

l2 l5 l1

DIN 2184-1 DIN 374

d1 M8 x 1 M10 x 1 M10 x 1,25 M12 x 1 M12 x 1,25 M12 x 1,5 M14 x 1,5 M16 x 1,5 M18 x 1,5 M20 x 1,5 M24 x 1,5

16

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

6.000 7.000 7.000 9.000 9.000 9.000 11.000 12.000 14.000 16.000 18.000

4.900 5.500 5.500 7.000 7.000 7.000 9.000 9.000 11.000 12.000 14.500

7.00 9.00 8.80 11.00 10.80 10.50 12.50 14.50 16.50 18.50 22.50

90.000 90.000 100.000 100.000 100.000 100.000 100.000 100.000 110.000 125.000 140.000

11.000 11.000 14.000 11.000 16.000 16.000 15.000 15.000 16.000 16.000 16.000

35.000 35.000 39.000 40.000 40.000 40.000 40.000 44.000 44.000 44.000 48.000

Article no.

4635

Discount group

103

Code no. 8.005 10.005 10.006 12.005 12.006 12.007 14.007 16.007 18.007 20.007 24.007

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡


Taps Machine taps for ISO metric fine threads Tool material

R

Tolerance on Ø Surface

HSS-E 6HX A

P

ä

Type

VA R45

M

ä

Form

E

Internal cooling

K

ã

N

ã

S

ã

H

d2

d1

SW

dk

l2 l5 l1

DIN 2184-1 DIN 374

d1 M6 x 0,75 M8 x 0,75 M8 x 1 M10 x 1 M10 x 1,25 M12 x 1 M12 x 1,25 M12 x 1,5 M14 x 1,5 M16 x 1,5 M18 x 1,5 M20 x 1,5 M24 x 1,5

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

4.500 6.000 6.000 7.000 7.000 9.000 9.000 9.000 11.000 12.000 14.000 16.000 18.000

3.400 4.900 4.900 5.500 5.500 7.000 7.000 7.000 9.000 9.000 11.000 12.000 14.500

5.20 7.20 7.00 9.00 8.80 11.00 10.80 10.50 12.50 14.50 16.50 18.50 22.50

80.000 80.000 90.000 90.000 100.000 100.000 100.000 100.000 100.000 100.000 110.000 125.000 140.000

8.000 8.000 11.000 11.000 14.000 11.000 16.000 16.000 15.000 15.000 16.000 16.000 16.000

30.000 30.000 35.000 35.000 39.000 40.000 40.000 40.000 40.000 44.000 44.000 44.000 48.000

Article no.

4631

Discount group

103

Code no. 6.004 8.004 8.005 10.005 10.006 12.005 12.006 12.007 14.007 16.007 18.007 20.007 24.007

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

17


Taps Oil feed taps for ISO metric fine threads Tool material

R

Tolerance on Ø Surface

HSS-E-PM 6HX A

P

ä

Type

VA R45

M

ä

Form

C

Internal cooling

K

ã

N

ã

S

ã

H

d2

d1

SW

dk

l2 l5 l1

DIN 2184-1 DIN 374

d1 M8 x 1 M10 x 1 M10 x 1,25 M12 x 1 M12 x 1,25 M12 x 1,5 M14 x 1,5 M16 x 1,5 M18 x 1,5 M20 x 1,5 M24 x 1,5

18

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

6.000 7.000 7.000 9.000 9.000 9.000 11.000 12.000 14.000 16.000 18.000

4.900 5.500 5.500 7.000 7.000 7.000 9.000 9.000 11.000 12.000 14.500

7.00 9.00 8.80 11.00 10.80 10.50 12.50 14.50 16.50 18.50 22.50

90.000 90.000 100.000 100.000 100.000 100.000 100.000 100.000 110.000 125.000 140.000

11.000 11.000 14.000 11.000 16.000 16.000 15.000 15.000 16.000 16.000 16.000

35.000 35.000 39.000 40.000 40.000 40.000 40.000 44.000 44.000 44.000 48.000

Article no.

4637

Discount group

103

Code no. 8.005 10.005 10.006 12.005 12.006 12.007 14.007 16.007 18.007 20.007 24.007

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡


Taps Machine taps for UNC-threads Tool material

R

Tolerance on Ø Surface

HSS-E 2BX A

P

ä

Type

VA R45

M

ä

Form

C

Internal cooling

K

ã

N

ã

S

ã

P

SW d2

d1

H dk

l2 l5 l1

~ DIN 371

P d2

d1

SW

l2

dk

l5 l1

~ DIN 376 DIN 2184-1 ~DIN 371/~DIN 376

d1 2 - 56 4 - 40 6 - 32 8 - 32 10 - 24 12 - 24 1/4 - 20 5/16 - 18 3/8 - 16 7/16 - 14 1/2 - 13 9/16 - 12 5/8 - 11 3/4 - 10 7/8 - 9 1-8

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

2.800 3.500 4.000 4.500 6.000 6.000 7.000 8.000 10.000 8.000 9.000 11.000 12.000 14.000 18.000 18.000

2.100 2.700 3.000 3.400 4.900 4.900 5.500 6.200 8.000 6.200 7.000 9.000 9.000 11.000 14.500 14.500

1.85 2.35 2.85 3.50 3.90 4.50 5.10 6.60 8.00 9.40 10.80 12.20 13.50 16.50 19.50 22.25

45.000 56.000 56.000 63.000 70.000 80.000 80.000 90.000 100.000 100.000 110.000 110.000 110.000 125.000 140.000 160.000

5.000 7.000 8.000 8.000 11.000 11.000 13.000 14.000 16.000 18.000 20.000 21.000 24.000 25.000 28.000 32.000

14.500 18.000 20.000 21.000 25.000 30.000 30.000 35.000 39.000 42.000 49.000 53.000 53.000 62.000 62.000 73.000

Article no.

391

Discount group

103

Code no. 2.184 2.845 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 14.288 15.875 19.050 22.225 25.400

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

19


Taps Machine taps for UNF-threads Tool material

R

Tolerance on Ø Surface

HSS-E 2BX A

P

ä

Type

VA R45

M

ä

Form

C

Internal cooling

K

ã

N

ã

S

ã

P

SW d2

d1

H dk

l2 l5 l1

~ DIN 371

P d2

d1

SW

l2

dk

l5 l1

~ DIN 374 DIN 2184-1 ~DIN 371/~DIN 374

d1 2 - 64 4 - 48 6 - 40 8 - 36 10 - 32 12 - 28 1/4 - 28 5/16 - 24 3/8 - 24 7/16 - 20 1/2 - 20 9/16 - 18 5/8 - 18 3/4 - 16 7/8 - 14 1 - 12

20

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

2.800 3.500 4.000 4.500 6.000 6.000 7.000 8.000 10.000 8.000 9.000 11.000 12.000 14.000 18.000 18.000

2.100 2.700 3.000 3.400 4.900 4.900 5.500 6.200 8.000 6.200 7.000 9.000 9.000 11.000 14.500 14.500

1.85 2.40 2.95 3.50 4.10 4.60 5.50 6.90 8.50 9.90 11.50 12.90 14.50 17.50 20.40 23.25

45.000 56.000 56.000 63.000 70.000 80.000 80.000 90.000 90.000 100.000 100.000 100.000 100.000 110.000 125.000 140.000

5.000 6.000 6.500 7.000 8.500 9.000 9.000 11.000 11.000 13.000 13.000 14.000 15.000 16.000 19.000 22.000

14.500 18.000 20.000 21.000 25.000 30.000 30.000 35.000 35.000 42.000 40.000 40.000 44.000 44.000 44.000 50.000

Article no.

392

Discount group

103

Code no. 2.184 2.845 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 14.288 15.875 19.050 22.225 25.400

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡


Taps Machine taps for BSP-threads Tool material

R

HSS-E

Tolerance on Ø

X

X

Surface

A

A

P

ä

Type

VA R45

VA R45

M

ä

Form

C

E

Internal cooling

Article no.

395

4632

Discount group

103

103

K

ã

N

ã

S

ã

H

d2

d1

SW

dk

l2 l5 l1

DIN 2184-1 DIN 5156

d1 G1/16 G1/8 G1/4 G3/8 G1/2 G5/8 G3/4 G7/8 G1

P

d2

SW

dk

l1

l2

l5

inch

mm

mm

mm

mm

mm

mm

28.000 28.000 19.000 19.000 14.000 14.000 14.000 14.000 11.000

6.000 7.000 11.000 12.000 16.000 18.000 20.000 22.000 25.000

4.900 5.500 9.000 9.000 12.000 14.500 16.000 18.000 20.000

6.80 8.80 11.80 15.25 19.00 21.00 24.50 28.25 30.75

90.000 90.000 100.000 100.000 125.000 125.000 140.000 150.000 160.000

11.000 11.000 14.000 14.000 18.000 18.000 20.000 22.000 24.000

30.000 35.000 40.000 44.000 44.000 48.000 53.000 53.000 56.000

Code no. 7.723 9.728 13.157 16.662 20.955 22.911 26.441 30.201 33.249

Availability ‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

21


Taps Machine taps for ISO metric threads Tool material

R

Tolerance on Ø Surface

HSS-E 6HX

6GX

7GX

6H+0,1

S

S

S

S

P

ä

Type

VA

VA

VA

VA

M

ä

Form

B

B

B

B

Internal cooling

Article no.

4218

4638

4639

4640

Discount group

103

103

103

103

K

ã

N

ã

S

ã

P

SW

d1

d2

H l2

dk

l5 l1

DIN 371

P d1

d2

SW

l2

dk

l5 l1

DIN 376 DIN 2184-1 DIN 371/DIN 376

d1 M2 M2,5 M3 M4 M5 M6 M8 M10 M12 M14 M16 M18 M20 M24 M30

22

P

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

mm

0.400 0.450 0.500 0.700 0.800 1.000 1.250 1.500 1.750 2.000 2.000 2.500 2.500 3.000 3.500

2.800 2.800 3.500 4.500 6.000 6.000 8.000 10.000 9.000 11.000 12.000 14.000 16.000 18.000 22.000

2.100 2.100 2.700 3.400 4.900 4.900 6.200 8.000 7.000 9.000 9.000 11.000 12.000 14.500 18.000

1.60 2.05 2.50 3.30 4.20 5.00 6.80 8.50 10.20 12.00 14.00 15.50 17.50 21.00 26.50

45.000 50.000 56.000 63.000 70.000 80.000 90.000 100.000 110.000 110.000 110.000 125.000 140.000 160.000 180.000

8.000 9.000 10.000 12.000 14.000 16.000 17.000 20.000 24.000 26.000 26.000 30.000 32.000 36.000 40.000

13.500 14.500 18.000 21.000 25.000 30.000 35.000 39.000 49.000 53.000 54.000 62.000 62.000 73.000 85.000

Code no. 2.000 2.500 3.000 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000 24.000 30.000

Availability ‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

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Taps Machine taps for ISO metric threads Tool material

R

Tolerance on Ø Surface

HSS-E-PM 6HX S

P

ä

Type

VA

M

ä

Form

B

Internal cooling

K

ã

N

ã

S

ã

P d2

d1

SW

H

l2

dk

l5 l1

DIN 371

P d1

d2

SW

l2

dk

l5 l1

DIN 376 DIN 2184-1 DIN 371/DIN 376

d1 M3 M4 M5 M6 M8 M10 M12 M14 M16 M20

P

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

mm

0.500 0.700 0.800 1.000 1.250 1.500 1.750 2.000 2.000 2.500

3.500 4.500 6.000 6.000 8.000 10.000 9.000 11.000 12.000 16.000

2.700 3.400 4.900 4.900 6.200 8.000 7.000 9.000 9.000 12.000

2.50 3.30 4.20 5.00 6.80 8.50 10.20 12.00 14.00 17.50

56.000 63.000 70.000 80.000 90.000 100.000 110.000 110.000 110.000 140.000

10.000 12.000 14.000 16.000 17.000 20.000 24.000 26.000 26.000 32.000

18.000 21.000 25.000 30.000 35.000 39.000 49.000 53.000 54.000 62.000

Article no.

4646

Discount group

103

Code no. 3.000 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 20.000

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

23


Taps Machine taps for ISO metric threads Tool material

R

Tolerance on Ø Surface

HSS-E-PM 6HX S

P

ä

Type

VA

M

ä

Form

B

Internal cooling

K

ã

N

ã

S

ã

H P d1

d2

SW

l2

DIN 371

dk

l5 l1 P d1

d2

SW

l2

dk

l5 l1

DIN 376 DIN 2184-1 DIN 371/DIN 376

d1 M3 M4 M5 M6 M8 M10 M12 M14 M16 M20

24

P

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

mm

0.500 0.700 0.800 1.000 1.250 1.500 1.750 2.000 2.000 2.500

6.000 6.000 6.000 6.000 8.000 10.000 12.000 12.000 12.000 16.000

4.900 4.900 4.900 4.900 6.200 8.000 9.000 9.000 9.000 12.000

2.50 3.30 4.20 5.00 6.80 8.50 10.20 12.00 14.00 17.50

56.000 63.000 70.000 80.000 90.000 100.000 110.000 110.000 110.000 140.000

10.000 12.000 14.000 16.000 17.000 20.000 24.000 26.000 26.000 32.000

18.000 21.000 25.000 30.000 35.000 39.000 49.000 53.000 54.000 62.000

Article no.

4651

Discount group

103

Code no. 3.000 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 20.000

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡


Taps Machine taps for ISO metric threads Tool material

L

Tolerance on Ø Surface

HSS-E 6HX S

P

ä

Type

VA

M

ä

Form

B

Internal cooling

K

ã

N

ã

S

ã

P d2

d1

SW

H

l2

dk

l5 l1

DIN 371

P d1

d2

SW

l2

dk

l5 l1

DIN 376 DIN 2184-1 DIN 371/DIN 376

d1 M2 M2,5 M3 M4 M5 M6 M8 M10 M12 M14 M16 M18 M20 M24 M30

P

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

mm

0.400 0.450 0.500 0.700 0.800 1.000 1.250 1.500 1.750 2.000 2.000 2.500 2.500 3.000 3.500

2.800 2.800 3.500 4.500 6.000 6.000 8.000 10.000 9.000 11.000 12.000 14.000 16.000 18.000 22.000

2.100 2.100 2.700 3.400 4.900 4.900 6.200 8.000 7.000 9.000 9.000 11.000 12.000 14.500 18.000

1.60 2.05 2.50 3.30 4.20 5.00 6.80 8.50 10.20 12.00 14.00 15.50 17.50 21.00 26.50

45.000 50.000 56.000 63.000 70.000 80.000 90.000 100.000 110.000 110.000 110.000 125.000 140.000 160.000 180.000

8.000 9.000 10.000 12.000 14.000 16.000 17.000 20.000 24.000 26.000 26.000 30.000 32.000 36.000 40.000

13.500 14.500 18.000 21.000 25.000 30.000 35.000 39.000 49.000 53.000 54.000 62.000 62.000 73.000 85.000

Article no.

4644

Discount group

103

Code no. 2.000 2.500 3.000 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000 20.000 24.000 30.000

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

25


Taps Machine taps for ISO metric threads Tool material

R

Tolerance on Ø Surface

HSS-E 6HX S

P

ä

Type

VA

M

ä

Form

B

Internal cooling

K

ã

N

ã

S

ã

P d2

d1

SW

H

l2

dk

l5 l1

P d1

d2

SW

l2

dk

l5 l1

Company std.

d1 M3 M4 M5 M6 M8 M10 M12 M14 M16 M20

26

Article no.

4645

Discount group

103

P

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

mm

0.500 0.700 0.800 1.000 1.250 1.500 1.750 2.000 2.000 2.500

3.500 4.500 6.000 6.000 8.000 10.000 9.000 11.000 12.000 16.000

2.700 3.400 4.900 4.900 6.200 8.000 7.000 9.000 9.000 12.000

2.50 3.30 4.20 5.00 6.80 8.50 10.20 12.00 14.00 17.50

90.000 125.000 140.000 160.000 180.000 200.000 220.000 220.000 220.000 280.000

10.000 12.000 14.000 16.000 17.000 20.000 24.000 26.000 26.000 32.000

18.000 21.000 25.000 30.000 35.000 39.000 158.000 160.000 160.000 217.000

Code no. 3.000 4.000 5.000 6.000 8.010 10.010 12.000 14.000 16.000 20.000

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡


Taps Oil feed taps for ISO metric threads Tool material

R

Tolerance on Ø Surface

HSS-E-PM 6HX S

P

ä

Type

VA

M

ä

Form

B

Internal cooling

K

ã

N

ã

S

ã

H P d1

d2

SW

l2

DIN 371

dk

l5 l1 P d1

d2

SW

l2

dk

l5 l1

DIN 376 DIN 2184-1 DIN 371/DIN 376

d1 M5 M6 M8 M10 M12 M14 M16 M20 M24 M30

P

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

mm

0.800 1.000 1.250 1.500 1.750 2.000 2.000 2.500 3.000 3.500

6.000 6.000 8.000 10.000 9.000 11.000 12.000 16.000 18.000 22.000

4.900 4.900 6.200 8.000 7.000 9.000 9.000 12.000 14.500 18.000

4.20 5.00 6.80 8.50 10.20 12.00 14.00 17.50 21.00 26.50

70.000 80.000 90.000 100.000 110.000 110.000 110.000 140.000 160.000 180.000

14.000 16.000 17.000 20.000 24.000 26.000 26.000 32.000 36.000 40.000

25.000 30.000 35.000 39.000 49.000 53.000 54.000 62.000 73.000 85.000

Article no.

4648

Discount group

103

Code no. 5.000 6.000 8.000 10.000 12.000 14.000 16.000 20.000 24.000 30.000

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

27


Taps Machine taps for ISO metric fine threads Tool material

R

Tolerance on Ø Surface

HSS-E

HSS-E-PM

6HX

6GX

6HX

S

S

S

P

ä

Type

VA

VA

VA

M

ä

Form

B

B

B

Internal cooling

Article no.

4219

4641

4647

Discount group

103

103

103

K

ã

N

ã

S

ã

H

d1

d2

SW

l2

dk

l5 l1

DIN 2184-1 DIN 374

d1 M6 x 0,75 M8 x 0,75 M8 x 1 M10 x 1 M10 x 1,25 M12 x 1 M12 x 1,25 M12 x 1,5 M14 x 1,5 M16 x 1,5 M18 x 1,5 M20 x 1,5 M24 x 1,5

28

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

4.500 6.000 6.000 7.000 7.000 9.000 9.000 9.000 11.000 12.000 14.000 16.000 18.000

3.400 4.900 4.900 5.500 5.500 7.000 7.000 7.000 9.000 9.000 11.000 12.000 14.500

5.20 7.20 7.00 9.00 8.80 11.00 10.80 10.50 12.50 14.50 16.50 18.50 22.50

80.000 80.000 90.000 90.000 100.000 100.000 100.000 100.000 100.000 100.000 110.000 125.000 140.000

13.000 14.000 17.000 16.000 20.000 20.000 20.000 20.000 20.000 22.000 25.000 25.000 28.000

30.000 30.000 35.000 35.000 39.000 40.000 40.000 40.000 40.000 44.000 44.000 44.000 48.000

Code no. 6.004 8.004 8.005 10.005 10.006 12.005 12.006 12.007 14.007 16.007 18.007 20.007 24.007

Availability ‡

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Taps Oil feed taps for ISO metric fine threads Tool material

R

Tolerance on Ø Surface

HSS-E-PM 6HX S

P

ä

Type

VA

M

ä

Form

B

Internal cooling

K

ã

N

ã

S

ã

H

P d1

d2

SW

l2

dk

l5 l1

DIN 2184-1 DIN 374

d1 M8 x 1 M10 x 1 M10 x 1,25 M12 x 1 M12 x 1,25 M12 x 1,5 M14 x 1,5 M16 x 1,5 M18 x 1,5 M20 x 1,5 M24 x 1,5

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

6.000 7.000 7.000 9.000 9.000 9.000 11.000 12.000 14.000 16.000 18.000

4.900 5.500 5.500 7.000 7.000 7.000 9.000 9.000 11.000 12.000 14.500

7.00 9.00 8.80 11.00 10.80 10.50 12.50 14.50 16.50 18.50 22.50

90.000 90.000 100.000 100.000 100.000 100.000 100.000 100.000 110.000 125.000 140.000

17.000 16.000 20.000 20.000 20.000 20.000 20.000 22.000 25.000 25.000 28.000

35.000 35.000 39.000 40.000 40.000 40.000 40.000 44.000 44.000 44.000 48.000

Article no.

4649

Discount group

103

Code no. 8.005 10.005 10.006 12.005 12.006 12.007 14.007 16.007 18.007 20.007 24.007

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

29


Taps Machine taps for UNC-threads Tool material

R

Tolerance on Ø Surface

HSS-E 2BX S

P

ä

Type

VA

M

ä

Form

B

Internal cooling

K

ã

N

ã

S

ã

H P d1

d2

SW

l2

~ DIN 371

dk

l5 l1 P d1

d2

SW

l2

dk

l5 l1

~ DIN 376 DIN 2184-1 ~DIN 371/~DIN 376

d1 2 - 56 4 - 40 6 - 32 8 - 32 10 - 24 12 - 24 1/4 - 20 5/16 - 18 3/8 - 16 7/16 - 14 1/2 - 13 9/16 - 12 5/8 - 11 3/4 - 10 7/8 - 9 1-8

30

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

2.800 3.500 4.000 4.500 6.000 6.000 7.000 8.000 10.000 8.000 9.000 11.000 12.000 14.000 18.000 18.000

2.100 2.700 3.000 3.400 4.900 4.900 5.500 6.200 8.000 6.200 7.000 9.000 9.000 11.000 14.500 14.500

1.85 2.35 2.85 3.50 3.90 4.50 5.10 6.60 8.00 9.40 10.80 12.20 13.50 16.50 19.50 22.25

45.000 56.000 56.000 63.000 70.000 80.000 80.000 90.000 100.000 100.000 110.000 110.000 110.000 125.000 140.000 160.000

9.000 11.000 12.000 12.000 14.000 16.000 16.000 18.000 20.000 22.000 25.000 28.000 30.000 33.000 35.000 38.000

14.500 18.000 20.000 21.000 25.000 30.000 30.000 35.000 39.000 42.000 49.000 53.000 53.000 62.000 62.000 73.000

Article no.

4642

Discount group

103

Code no. 2.184 2.845 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 14.288 15.875 19.050 22.225 25.400

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡


Taps Machine taps for UNF-threads Tool material

R

Tolerance on Ø Surface

HSS-E 2BX S

P

ä

Type

VA

M

ä

Form

B

Internal cooling

K

ã

N

ã

S

ã

H P d1

d2

SW

l2

~ DIN 371

dk

l5 l1 P d1

d2

SW

l2

dk

l5 l1

~ DIN 374 DIN 2184-1 ~DIN 371/~DIN 374

d1 2 - 64 4 - 48 6 - 40 8 - 36 10 - 32 12 - 28 1/4 - 28 5/16 - 24 3/8 - 24 7/16 - 20 1/2 - 20 9/16 - 18 5/8 - 18 3/4 - 16 7/8 - 14 1 - 12

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

2.800 3.500 4.000 4.500 6.000 6.000 7.000 8.000 10.000 8.000 9.000 11.000 12.000 14.000 18.000 18.000

2.100 2.700 3.000 3.400 4.900 4.900 5.500 6.200 8.000 6.200 7.000 9.000 9.000 11.000 14.500 14.500

1.85 2.40 2.95 3.50 4.10 4.60 5.50 6.90 8.50 9.90 11.50 12.90 14.50 17.50 20.40 23.25

45.000 56.000 56.000 63.000 70.000 80.000 80.000 90.000 90.000 100.000 100.000 100.000 100.000 110.000 125.000 140.000

9.000 10.000 11.000 12.000 14.000 16.000 16.000 18.000 18.000 22.000 20.000 22.000 22.000 25.000 25.000 28.000

14.500 18.000 20.000 21.000 25.000 30.000 30.000 35.000 35.000 42.000 40.000 40.000 44.000 44.000 44.000 50.000

Article no.

4643

Discount group

103

Code no. 2.184 2.845 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 14.288 15.875 19.050 22.225 25.400

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

31


Taps Machine taps for BSP-threads Tool material

R

HSS-E

Tolerance on Ø

X

Surface

S

P

ä

Type

VA

M

ä

Form

B

Internal cooling

K

ã

N

ã

S

ã

H

d1

d2

SW

l2

dk

l5 l1

DIN 2184-1 DIN 5156

d1 G1/16 G1/8 G1/4 G3/8 G1/2 G5/8 G3/4 G7/8 G1

32

Article no.

4220

Discount group

103

P

d2

SW

dk

l1

l2

l5

inch

mm

mm

mm

mm

mm

mm

28.000 28.000 19.000 19.000 14.000 14.000 14.000 14.000 11.000

6.000 7.000 11.000 12.000 16.000 18.000 20.000 22.000 25.000

4.900 5.500 9.000 9.000 12.000 14.500 16.000 18.000 20.000

6.80 8.80 11.80 15.25 19.00 21.00 24.50 28.25 30.75

90.000 90.000 100.000 100.000 125.000 125.000 140.000 150.000 160.000

18.000 18.000 20.000 22.000 25.000 25.000 28.000 28.000 30.000

30.000 35.000 40.000 44.000 44.000 48.000 53.000 53.000 56.000

Code no. 7.723 9.728 13.157 16.662 20.955 22.911 26.441 30.201 33.249

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡


FLUTELESS TAPS


Thread depth

≤3xD

Tool material

HSS-E-PM

Lead form

C

E

C

E

h6

h6

h6

h6

6HX

4487 p. 35

4494 p. 35

4485 p. 37

4483 p. 36

6GX

4488 p. 35 4495 p. 38

4486 p. 40

4484 p. 39

Surface Coolant delivery Shank tolerance

THROUGHHOLE BLINDHOLE Thread type = = = =

Neat oil Soluble oil Paste MQL

Tolerance

M

6HX

4489 p. 38

6GX

4490 p. 38

UNC

2BX

4491 p. 41

UNF

2BX

4492 p. 42

MF

G

Group of materials

-X Suitable lubricant:

4493 p. 43 /

/

/

/

/

/

/

/

/

Tensile strength

Material example

Material no.

≤800 N/mm²

S235JR C15 11SMnPb30

1.0037 1.0401 1.0718

25

25

25

25

Structural and free cutting

P1 steels, heat-treatable steels

Article no./page

unalloyed

Recommended cutting speed vc [m/min]

P2

Free-cutting steels, unalloyed case hardened steels, nitriding steels

800 1000 N/mm²

S355J2 C60 31CrMo12

1.0577 1.0601 1.8515

25

25

25

25

P3

Alloyed heat-treatable steels, tool steels, high speed steels

800 1200 N/mm²

42CrMo4 36CrNiMo4 X36CrMo17 HS 6-5-2

1.7225 1.6511 1.2316 1.3343

15

15

15

15

steels, sulphured, M1 Stainlessaustenitic

≤1000 N/mm²

X5CrNi18-10 X6CrNiTi18-10 X8CrNiS18-9

1.4301 1.4571 1.4305

15

15

15

15

and acidresistant M M2 Stainlesssteels, martensitic

≤1000 N/mm²

X17CrNi16-2 X90CrMoV18 X2CrTi12

1.4057 1.4112 1.4512

10

10

10

10

6

6

6

6

30

30

30

30

25

25

25

25

15

15

15

15

30

30

30

30

30

30

30

30

P

M3

Duplex and Super Duplex

≤1300 N/mm²

X2CrNiMoN22-5-3 X2CrNiMoN25-7-4 X2CrNiMoCuWN25-7-4

1.4462 1.4410 1.4501

K1

Cast Iron

300 HB

EN-GJL-150 EN-GJL-250 EN-GJL-300

0.6015 0.6025 0.6030

Spheroidal graphite iron and malleable cast iron

EN-GJS-400-15

350 HB

EN-GJS-600-3 EN-GJS-700-2

0.7040 0.7060 0.7070

1000 N/mm2

EN-GJS1000-5 EN-GJV250 EN-GJV400

K K2

K3

ADI GGV

N1

Aluminium and wrought alloys

≤450 N/mm²

N2

Al cast alloys

≤600 N/mm²

Magnesium alloys

≤500 N/mm²

N N3

350 HB

long-chipping

N4

Copper and copper alloys short-chipping

3.0250 32315 3.4335

GD-AlSi5Cu1Mg

3.2134 3.2162 3.2373 3.2581 3.5812.08 2.0250 2.0332

GD-AlSi8Cu3 G-AlSi9Mg G-AlSi12 GDMgAl8Zn1 CuZn20 CuZn37Pb0,5 CuZn39Pb2 CuZn43Pb2 Ampco PMMA, POM,PVC Pertinax

2.0380 2.0410

N5

Copper special alloys

S1

Titanium and Titanium alloys

≤ 1200 N/mm²

Titan TiAl5Sn2 TiAl6V4

3.702<5 3.7115 3.7165

8

8

8

8

S2

Nickel, cobalt, iron alloys

≤ 1400 N/mm²

Hastelloy C4 Inconel 718 Nimonic 105

2.4610 2.4668 2.4634

8

8

8

8

H1 H2

High tensile/ hardened steels

45 - 55 HRC 55 - 62 HRC

≤1400 N/mm² long-chipping Plastics N6 [Thermoplastics, Duroplastics] short-chipping

S

H

Al99,5H AlMgSi1 AlZn4,5Mg

/


Fluteless machine taps Fluteless machine taps for ISO metric threads Tool material

R

Tolerance on Ø

HSS-E-PM 4HX/6HX

6GX

6HX

Surface P

ä

Type

N

N

N

M

ä

Form

C

C

E

Internal cooling

Article no.

4487

4488

4494

Discount group

208

208

208

ä ã

S

ä

SW

P d1

H

d2

K N

dk

l2 l5 l1

P d1

SW

d2

~ DIN 371

dk

l2 l5 l1

~ DIN 376 DIN 2174 ~DIN 371/~DIN 376

d1 M1 M1,2 M1,4 M1,6 M1,7 M1,8 M2 M2,5 M3 M4 M5 M6 M8 M10 M12 M14 M16 M20

P

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

mm

0.250 0.250 0.300 0.350 0.350 0.350 0.400 0.450 0.500 0.700 0.800 1.000 1.250 1.500 1.750 2.000 2.000 2.500

2.500 2.500 2.500 2.500 2.500 2.500 2.800 2.800 3.500 4.500 6.000 6.000 8.000 10.000 9.000 11.000 12.000 16.000

2.100 2.100 2.100 2.100 2.100 2.100 2.100 2.100 2.700 3.400 4.900 4.900 6.200 8.000 7.000 9.000 9.000 12.000

0.90 1.10 1.25 1.45 1.55 1.65 1.85 2.30 2.80 3.70 4.65 5.55 7.40 9.30 11.20 13.10 15.10 18.90

40.000 40.000 40.000 40.000 40.000 40.000 45.000 50.000 56.000 63.000 70.000 80.000 90.000 100.000 110.000 110.000 110.000 140.000

4.000 4.800 5.600 6.400 6.800 7.300 8.000 9.000 10.000 12.000 14.000 16.000 17.000 20.000 24.000 26.000 26.000 32.000

13.500 14.500 18.000 21.000 25.000 30.000 35.000 39.000 49.000 53.000 54.000 62.000

Code no. 1.000 1.200 1.400 1.600 1.700 1.800 2.000 2.500 3.000 4.000 5.000 6.000 8.000 10.000 12.000 14.000 16.000 20.000

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡

‡

‡

‡

‡

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‡

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‡

‡

‡

‡

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‡

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Article no. 4487 from Ø M2 with oil grooves, Ø tolerance ≤ M1.4 = 4HX

35


Fluteless machine taps Oil feed fluteless taps f. ISO metric threads Tool material

R

Tolerance on Ø

HSS-E-PM 6HX

Surface P

ä

Type

N

M

ä

Form

E

Internal cooling

ä ã

S

ä

SW

P

d2

K N

d1

H

dk

l2 l5 l1

~ DIN 371

d1

d2

SW

dk

l2 l5 l1

~ DIN 376 DIN 2174 ~DIN 371/~DIN 376

d1 M5 M6 M8 M10 M12 M14 M16 M20

36

P

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

mm

0.800 1.000 1.250 1.500 1.750 2.000 2.000 2.500

6.000 6.000 8.000 10.000 9.000 11.000 12.000 16.000

4.900 4.900 6.200 8.000 7.000 9.000 9.000 12.000

4.65 5.55 7.40 9.30 11.20 13.10 15.10 18.90

70.000 80.000 90.000 100.000 110.000 110.000 110.000 140.000

8.500 11.000 14.000 16.000 18.500 20.000 20.000 25.000

25.000 30.000 35.000 39.000 49.000 53.000 54.000 62.000

Article no.

4483

Discount group

208

Code no. 5.000 6.000 8.000 10.000 12.000 14.000 16.000 20.000

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡


Fluteless machine taps Oil feed fluteless taps f. ISO metric threads Tool material

R

Tolerance on Ø

HSS-E-PM 6HX

Surface P

ä

Type

N

M

ä

Form

C

Internal cooling

ä ã

S

ä

SW

P

d2

K N

d1

H

dk

l2 l5 l1

~ DIN 371

P d1

d2

SW

dk

l2 l5 l1

~ DIN 376 DIN 2174 ~DIN 371/~DIN 376

d1 M5 M6 M8 M10 M12 M14 M16 M20

P

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

mm

0.800 1.000 1.250 1.500 1.750 2.000 2.000 2.500

6.000 6.000 8.000 10.000 9.000 11.000 12.000 16.000

4.900 4.900 6.200 8.000 7.000 9.000 9.000 12.000

4.65 5.55 7.40 9.30 11.20 13.10 15.10 18.90

70.000 80.000 90.000 100.000 110.000 110.000 110.000 140.000

8.500 11.000 14.000 16.000 18.500 20.000 20.000 25.000

25.000 30.000 35.000 39.000 49.000 53.000 54.000 62.000

Article no.

4485

Discount group

208

Code no. 5.000 6.000 8.000 10.000 12.000 14.000 16.000 20.000

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

37


Fluteless machine taps Fluteless machine taps for ISO metric fine threads Tool material

R

Tolerance on Ø

HSS-E-PM 6HX

6GX

6HX

Surface P

ä

Type

N

N

N

M

ä

Form

C

C

E

Internal cooling

Article no.

4489

4490

4495

Discount group

208

208

208

K

ä

N

ã

S

ä

H

d1

d2

SW

dk

l2 l5 l1

DIN 2174 ~DIN 374

d1 M8 x 1 M10 x 1 M10 x 1,25 M12 x 1,25 M12 x 1,5 M14 x 1,25 M14 x 1,5 M16 x 1,5 M20 x 1,5

38

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

6.000 7.000 7.000 9.000 9.000 11.000 11.000 12.000 16.000

4.900 5.500 5.500 7.000 7.000 9.000 9.000 9.000 12.000

7.55 9.55 9.40 11.40 11.30 13.40 13.30 15.30 19.30

90.000 90.000 100.000 100.000 100.000 100.000 100.000 100.000 125.000

16.000 16.000 20.000 20.000 20.000 20.000 20.000 22.000 25.000

35.000 35.000 39.000 40.000 40.000 40.000 40.000 44.000 44.000

Code no. 8.005 10.005 10.006 12.006 12.007 14.006 14.007 16.007 20.007

Availability ‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡

‡


Fluteless machine taps Oil feed fluteless taps f. ISO metric fine threads Tool material

R

Tolerance on Ø

HSS-E-PM 6HX

Surface P

ä

Type

N

M

ä

Form

E

Internal cooling

K

ä

N

ã

S

ä

H

d1

d2

SW

dk

l2 l5 l1

DIN 2174 ~DIN 374

d1 M8 x 1 M10 x 1 M10 x 1,25 M12 x 1,25 M12 x 1,5 M14 x 1,25 M14 x 1,5 M16 x 1,5 M20 x 1,5

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

6.000 7.000 7.000 9.000 9.000 11.000 11.000 12.000 16.000

4.900 5.500 5.500 7.000 7.000 9.000 9.000 9.000 12.000

7.55 9.55 9.40 11.40 11.30 13.40 13.30 15.30 19.30

90.000 90.000 100.000 100.000 100.000 100.000 100.000 100.000 125.000

11.000 11.000 14.000 16.000 16.000 15.000 15.000 15.000 16.000

35.000 35.000 39.000 40.000 40.000 40.000 40.000 44.000 44.000

Article no.

4484

Discount group

208

Code no. 8.005 10.005 10.006 12.006 12.007 14.006 14.007 16.007 20.007

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

39


Fluteless machine taps Oil feed fluteless taps f. ISO metric fine threads Tool material

R

Tolerance on Ø

HSS-E-PM 6HX

Surface P

ä

Type

N

M

ä

Form

C

Internal cooling

K

ä

N

ã

S

ä

H

P d1

d2

SW

dk

l2 l5 l1

DIN 2174 ~DIN 374

d1 M8 x 1 M10 x 1 M10 x 1,25 M12 x 1,25 M12 x 1,5 M14 x 1,25 M14 x 1,5 M16 x 1,5 M20 x 1,5

40

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

6.000 7.000 7.000 9.000 9.000 11.000 11.000 12.000 16.000

4.900 5.500 5.500 7.000 7.000 9.000 9.000 9.000 12.000

7.55 9.55 9.40 11.40 11.30 13.40 13.30 15.30 19.30

90.000 90.000 100.000 100.000 100.000 100.000 100.000 100.000 125.000

11.000 11.000 14.000 16.000 16.000 15.000 15.000 15.000 16.000

35.000 35.000 39.000 40.000 40.000 40.000 40.000 44.000 44.000

Article no.

4486

Discount group

208

Code no. 8.005 10.005 10.006 12.006 12.007 14.006 14.007 16.007 20.007

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡


Fluteless machine taps Fluteless machine taps for UNC-threads Tool material

R

Tolerance on Ø

HSS-E-PM 2BX

Surface P

ä

Type

N

M

ä

Form

C

Internal cooling

ä ã

S

ä

SW

P

d2

K N

d1

H

dk

l2 l5 l1

~ DIN 371

P d1

d2

SW

dk

l2 l5 l1

~ DIN 376 DIN 2184-1 ~DIN 371/~DIN 376

d1 4 - 40 6 - 32 8 - 32 10 - 24 12 - 24 1/4 - 20 5/16 - 18 3/8 - 16 7/16 - 14 1/2 - 13 9/16 - 12 5/8 - 11 3/4 - 10

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

3.500 4.000 4.500 6.000 6.000 7.000 8.000 10.000 8.000 9.000 11.000 12.000 14.000

2.700 3.000 3.400 4.900 4.900 5.500 6.200 8.000 6.200 7.000 9.000 9.000 11.000

2.55 3.15 3.80 4.35 5.00 5.75 7.30 8.80 10.30 11.80 13.30 14.80 17.90

56.000 56.000 63.000 70.000 80.000 80.000 90.000 90.000 100.000 100.000 100.000 100.000 110.000

11.000 12.000 12.000 14.000 16.000 16.000 18.000 20.000 22.000 25.000 28.000 30.000 33.000

18.000 20.000 21.000 25.000 30.000 30.000 35.000 35.000 42.000 40.000 40.000 44.000 44.000

Article no.

4491

Discount group

208

Code no. 2.845 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 14.288 15.875 19.050

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

41


Fluteless machine taps Fluteless machine taps for UNF-threads Tool material

R

Tolerance on Ø

HSS-E-PM 2BX

Surface P

ä

Type

N

M

ä

Form

C

Internal cooling

ä ã

S

ä

SW

P

d2

K N

d1

H

dk

l2 l5 l1

~ DIN 371

P d1

d2

SW

dk

l2 l5 l1

~ DIN 374 DIN 2184-1 ~DIN 371/~DIN 374

d1 4 - 48 6 - 40 8 - 36 10 - 32 12 - 28 1/4 - 28 5/16 - 24 3/8 - 24 7/16 - 20 1/2 - 20 9/16 - 18 5/8 - 18 3/4 - 16

42

d2

SW

dk

l1

l2

l5

mm

mm

mm

mm

mm

mm

3.500 4.000 4.500 6.000 6.000 7.000 8.000 10.000 8.000 9.000 11.000 12.000 14.000

2.700 3.000 3.400 4.900 4.900 5.500 6.200 8.000 6.200 7.000 9.000 9.000 11.000

2.60 3.20 3.85 4.45 5.10 5.95 7.45 9.05 10.55 12.10 13.65 15.25 18.35

56.000 56.000 63.000 70.000 80.000 80.000 90.000 100.000 100.000 100.000 100.000 100.000 110.000

10.000 11.000 12.000 14.000 16.000 16.000 18.000 18.000 22.000 20.000 22.000 22.000 25.000

18.000 20.000 21.000 25.000 30.000 30.000 35.000 39.000 42.000 40.000 40.000 44.000 44.000

Article no.

4492

Discount group

208

Code no. 2.845 3.505 4.166 4.826 5.486 6.350 7.938 9.525 11.113 12.700 14.288 15.875 19.050

Availability ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡


Fluteless machine taps Fluteless machine taps for BSP-threads Tool material

R

HSS-E-PM

Tolerance on Ø Surface

P

ä

Type

N

M

ä

Form

C

Internal cooling

K

ä

N

ã

S

ä

H

P d1

d2

SW

dk

l2 l5 l1

DIN 2184-1 DIN 2189

d1 G1/8 G1/4 G3/8 G1/2

Article no.

4493

Discount group

208

P

d2

SW

dk

l1

l2

l5

inch

mm

mm

mm

mm

mm

mm

28.000 19.000 19.000 14.000

7.000 11.000 12.000 16.000

5.500 9.000 9.000 12.000

9.30 12.50 16.00 20.00

90.000 100.000 100.000 125.000

18.000 20.000 22.000 25.000

35.000 40.000 44.000 44.000

Code no. 9.728 13.157 16.662 20.955

Availability ‡ ‡ ‡ ‡

43


CNC Gühro ThreadMill

Free programming software for thread milling cutters and drill thread milling cutter In order to make the machining with Gühring thread milling cutters even more user friendly, we have developed the intuitive “CNC Gühro ThreadMill”. “CNC Gühro Thread Mill” is available free-of-charge. Simply download it from our homepage www.guehring.de.

To the optimal CNC programme in five steps

1. Specify the thread data select from all current thread standards

2. Select the material you are always referred to the optimal parameters

3. Select the tool technical data, drawing, machining time and video simplify selection

4. Record CNC data enter required milling strategy and parameters

5. Receive CNC programme with code and data sheet programming data (Sinumerik, Haidenhain, Fanuc, Philips, Mazatrol or Hurco) are imported and automatically recognised


TECHNICAL SECTION


Index

from page Tapping size hole and hole diameter

47

DIN characteristic features

50

Comparison of standards

53

The characteristics of different thread types

54

General information for tapping

56

Definitions and angles, centres and flute forms

56

Chamfer forms, selection and application

57

Tolerance fields

59

Taps for ISO metric threads DIN EN 22857 (extract)

60

General information for thread forming

46

61

Thread production by pressure deformation

61

“Profile“ – Gühring’s new fluteless tap generation

62

Definitions, angles, centres, thread tolerances and fits

63

Tapping size hole diameter

64

Lubrication for thread forming

65


Tapping size hole and hole diameter

Tapping size holes for thread cutting and thread milling

ISO metric fine threads DIN 13

Std. ISO metric threads DIN 13 nom. Ø

pitch P

M1 M 1.1 M 1.2 M 1.4 M 1.6 M 1.8 M2 M 2.2 M 2.5 M3 M 3.5 M4 M 4.5 M5 M6 M7 M8 M9 M 10 M 11 M 12 M 14 M 16 M 18 M 20 M 22 M 24 M 27 M 30 M 33 M 36 M 39 M 42 M 45 M 48 M 52 M 56

mm

tapping size hole Ø DIN 336 mm

0.25 0.25 0.25 0.30 0.35 0.35 0.40 0.45 0.45 0.50 0.60 0.70 0.75 0.80 1.00 1.00 1.25 1.25 1.50 1.50 1.75 2.00 2.00 2.50 2.50 2.50 3.00 3.00 3.50 3.50 4.00 4.00 4.50 4.50 5.00 5.00 5.50

0.75 0.85 0.95 1.10 1.25 1.45 1.60 1.75 2.05 2.50 2.90 3.30 3.70 4.20 5.00 6.00 6.80 7.80 8.50 9.50 10.20 12.00 14.00 15.50 17.50 19.50 21.00 24.00 26.50 29.50 32.00 35.00 37.50 40.50 43.00 47.00 50.50

core diameter of int. thread 6H* min. mm

0.729 0.829 0.929 1.075 1.221 1.421 1.567 1.713 2.013 2.459 2.850 3.242 3.688 4.134 4.917 5.917 6.647 7.647 8.376 9.376 10.106 11.835 13.835 15.294 17.294 19.294 20.752 23.752 26.211 29.211 31.670 34.670 37.129 40.129 42.587 46.587 50.046

max. mm

0.785 0.885 0.985 1.142 1.321 1.521 1.679 1.838 2.138 2.599 3.010 3.422 3.878 4.334 5.153 6.153 6.912 7.912 8.676 9.676 10.441 12.210 14.210 15.744 17.744 19.744 21.252 24.252 26.771 29.771 32.270 35.270 37.799 40.799 43.297 47.297 50.796

nom. x pitch tapping Ø P size hole Ø DIN 336 mm mm

M 2.5 M 3.0 M 3.5 M 4.0 M 4.5 M 5.0 M 5.5 M 6.0 M 7.0 M 8.0 M 8.0 M 8.0 M 9.0 M 9.0 M 10 M 10 M 10 M 11 M 11 M 12 M 12 M 12 M 14 M 14 M 14 M 15 M 15 M 16 M 16 M 16 M 17 M 17 M 18 M 18 M 20 M 20 M 20 M 22

x 0.35 x 0.35 x 0.35 x 0.50 x 0.50 x 0.50 x 0.50 x 0.75 x 0.75 x 0.50 x 0.75 x 1.00 x 0.75 x 1.00 x 0.75 x 1.00 x 1.25 x 0.75 x 1.00 x 1.00 x 1.25 x 1.50 x 1.00 x 1.25 x 1.50 x 1.00 x 1.50 x 1.00 x 1.25 x 1.50 x 1.00 x 1.50 x 1.00 x 1.50 x 1.00 x 1.50 x 2.00 x 1.00

2.15 2.65 3.15 3.50 4.00 4.50 5.00 5.20 6.20 7.50 7.20 7.00 8.20 8.00 9.20 9.00 8.80 10.20 10.00 11.00 10.80 10.50 13.00 12.80 12.50 14.00 13.50 15.00 14.80 14.50 16.00 15.50 17.00 16.50 19.00 18.50 18.00 21.00

core diameter of int. thread 6H min. mm

max. mm

2.121 2.621 3.121 3.459 3.959 4.459 4.959 5.188 6.188 7.459 7.188 6.917 8.188 7.917 9.188 8.917 8.647 10.188 9.917 10.917 10.647 10.376 12.917 12.647 12.376 13.917 13.376 14.917 14.647 14.376 15.917 15.376 16.917 16.376 18.917 18.376 17.835 20.917

2.221 2.721 3.221 3.599 4.099 4.599 5.099 5.378 6.378 7.599 7.378 7.153 8.378 8.153 9.378 9.153 8.912 10.378 10.153 11.153 10.912 10.676 13.153 12.912 12.676 14.153 13.676 15.153 14.912 14.676 16.153 15.676 17.153 16.676 19.153 18.676 18.210 21.153

UNC threads ASME B1.1

nom. x pitch tapping Ø P size hole Ø DIN 336 mm mm

M 22 M 22 M 24 M 24 M 24 M 25 M 25 M 25 M 27 M 27 M 27 M 28 M 28 M 28 M 30 M 30 M 30 M 30 M 32 M 32 M 33 M 33 M 33 M 35 M 36

x 1.50 x 2.00 x 1.00 x 1.50 x 2.00 x 1.00 x 1.50 x 2.00 x 1.00 x 1.50 x 2.00 x 1.00 x 1.50 x 2.00 x 1.00 x 1.50 x 2.00 x 3.00 x 1.50 x 2.00 x 1.50 x 2.00 x 3.00 x 1.50 x 1.50

20.50 20.00 23.00 22.50 22.00 24.00 23.50 23.00 26.00 25.50 25.00 27.00 26.50 26.00 29.00 28.50 28.00 27.00 30.50 30.00 31.50 31.00 30.00 33.50 34.50

core diameter of int. thread 6H min. mm

nom. threads tapping Ø size hole Ø per DIN 336 inch mm

max. mm

20.376 19.835 22.917 22.376 21.835 23.917 23.376 22.835 25.917 25.376 24.835 26.917 26.376 25.835 28.917 28.376 27.835 26.752 30.376 29.835 31.376 30.835 29.752 33.376 34.376

20.676 20.210 23.153 22.676 22.210 24.153 23.676 23.210 26.153 25.676 25.210 27.153 26.676 26.210 29.153 28.676 28.210 27.252 30.676 30.210 31.676 31.210 30.252 33.676 34.676

No. 1 No. 2 No. 3 No. 4 No. 5 No. 6 No. 8 No. 10 No. 12 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1 1 1/8 1 1/4 1 3/8 1 1/2 1 3/4 2

-

64 56 48 40 40 32 32 24 24 20 18 16 14 13 12 11 10 9 8 7 7 6 6 5 4.5

1.55 1.85 2.10 2.35 2.65 2.85 3.50 3.90 4.50 5.10 6.60 8.00 9.40 10.80 12.20 13.50 16.50 19.50 22.25 25.00 28.00 30.75 34.00 39.50 45.00

core diameter of int. thread 2B min. mm

1.425 1.694 1.941 2.157 2.487 2.642 3.302 3.683 4.343 4.978 6.401 7.798 9.144 10.592 11.989 13.386 16.307 19.177 21.971 24.638 27.813 30.353 33.528 38.938 44.679

max. mm

1.580 1.872 2.146 2.385 2.698 2.896 3.531 3.937 4.597 5.258 6.731 8.153 9.550 11.024 12.446 13.868 16.840 19.761 22.606 25.349 28.524 31.115 34.290 39.802 45.593

* M 1.1 up to M 1.4 tapping size hole of int. thread 5H

UNC threads ISO 3161

MJ threads DIN ISO 5855 nom. Ø

MJ 3 MJ 4 MJ 5 MJ 6 MJ 6 MJ 6 MJ 8 MJ 8 MJ 8 MJ 8 MJ 10 MJ 10 MJ 10 MJ 12 MJ 16

x pitch P

x x x x x x x x x x x x x x x

mm

tapping size hole Ø DIN 336 mm

0.50 0.70 0.80 0.50 0.75 1.00 0.50 0.75 1.00 1.25 1.00 1.25 1.50 1.75 2.00

2.60 3.40 4.30 5.55 5.35 5.10 7.55 7.35 7.10 6.90 9.10 8.90 8.60 10.40 14.20

core diameter of int. thread 5H* min. mm

max. mm

2.513 3.318 4.221 5.513 5.269 5.026 7.513 7.269 7.026 6.782 9.026 8.782 8.539 10.295 14.051

2.653 3.498 4.421 5.625 5.419 5.216 7.625 7.419 7.216 6.994 9.216 8.994 8.775 10.560 14.351

nom. Ø

No. No. No. No.

6 8 10 12 1/4 5/16 3/8 7/16 1/2 9/16 5/8

threads

-

per inch

tapping size hole Ø DIN 336 mm

32 32 24 24 20 18 16 14 13 12 11

2.85 3.55 4.00 4.60 5.30 6.75 8.20 9.60 11.00 12.40 13.80

UNF threads ISO 3161 core diameter of int. thread 3B min. mm

2.733 3.393 3.795 4.455 5.113 6.563 7.978 9.346 10.798 12.228 13.627

nom. Ø

threads

max. mm

2.939 3.599 4.064 4.704 5.387 6.833 8.255 9.639 11.095 12.482 13.904

per inch

No. 6 No. 8 No. 10 No. 12 1/4 5/16 3/8 7/16 1/2 9/16 5/8

-

40 36 32 28 28 24 24 20 20 18 18

tapping size hole Ø DIN 336 mm

core diameter of int. thread 3B min. mm

3.00 3.60 4.20 4.75 5.60 7.00 8.60 10.00 11.60 13.00 14.60

2.888 3.480 4.054 4.602 5.466 6.906 8.494 9.876 11.463 12.913 14.501

max. mm

3.053 3.663 4.255 4.816 5.662 7.109 8.679 10.084 11.661 13.122 14.702

* MJ 3x0.50 up to MJ 5x0.80 tapping size hole of int. thread 6H

47


Tapping size hole and hole diameter

Tapping size holes for thread cutting and thread milling

nom. threads tapping Ø size hole Ø per DIN 336 inch mm

No. 1No. 2No. 3No. 4No. 5No. 6No. 8No. 10 No. 12 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1 1 1/8 1 1/4 1 3/8 1 1/2 -

72 64 56 48 44 40 36 32 28 28 24 24 20 20 18 18 16 14 12 12 12 12 12

1.55 1.85 2.15 2.40 2.70 2.95 3.50 4.10 4.60 5.50 6.90 8.50 9.90 11.50 12.90 14.50 17.50 20.40 23.25 26.50 29.50 32.75 36.00

core diameter of int. thread 2B min. mm

max. mm

1.473 1.755 2.024 2.271 2.550 2.819 3.404 3.962 4.496 5.359 6.782 8.382 9.728 11.328 12.751 14.351 17.323 20.269 23.114 26.289 29.464 32.639 35.814

1.610 1.910 2.197 2.459 2.741 3.023 3.607 4.166 4.724 5.588 7.036 8.636 10.033 11.608 13.081 14.681 17.678 20.650 23.571 26.746 29.921 33.096 36.271

nom. threads tapping Ø size hole Ø per DIN 336 inch inch mm

W 1/16 W 3/32 W 1/8 W 5/32 W 3/16 W 7/32 W 1/4 W 5/16 W 3/8 W 7/16 W 1/2 W 9/16 W 5/8 W 3/4 W 7/8 W1 W 1 1/8 W 1 1/4 W 1 3/8 W 1 1/2 W 1 5/8 W 1 3/4 W2

60 48 40 32 24 24 20 18 16 14 12 12 11 10 9 8 7 7 6 6 5 5 4.5

core diameter of int. thread min. mm

1.20 1.80 2.50 3.20 3.60 4.50 5.10 6.50 7.90 9.20 10.50 12.00 13.50 16.25 19.25 22.00 24.50 27.75 30.50 33.50 35.50 39.00 44.50

Steel armoured conduit threads to DIN 40430

(Whitworth) threads (DIN-ISO 228-1)

BSW (Whitworth) threads BS84

UNF threads ASME B1.1

nom. threads tapping Ø size hole Ø per DIN 336 inch inch mm

max. mm

1.045 1.704 2.362 2.952 3.407 4.201 4.724 6.130 7.492 8.789 9.989 11.577 12.918 15.797 18.611 21.334 23.928 27.103 29.504 32.679 34.769 37.944 43.571

1.230 1.912 2.591 3.214 3.745 4.539 5.156 6.590 7.987 9.330 10.591 12.179 13.558 16.483 19.353 22.147 24.832 28.007 30.528 33.703 35.963 39.138 44.877

G 1/16 G 1/8 G 1/4 G 3/8 G 1/2 G 5/8 G 3/4 G 7/8 G1 G 11/8 G 11/4 G 11/2 G 13/4 G2

28 28 19 19 14 14 14 14 11 11 11 11 11 11

core diameter of int. thread

6.80 8.80 11.80 15.25 19.00 21.00 24.50 28.25 30.75 35.50 39.50 45.25 51.00 57.00

min. mm

max. mm

6.561 8.566 11.445 14.950 18.631 20.587 24.117 27.877 30.291 34.939 38.952 44.845 50.788 56.656

6.843 8.848 11.890 15.395 19.172 21.128 24.658 28.418 30.931 35.579 39.592 45.485 51.428 57.296

nom. threads tapping Ø size hole Ø per DIN 336 inch mm

Pg Pg Pg Pg Pg Pg Pg Pg Pg Pg

7 9 11 13.5 16 21 29 36 42 48

20 18 18 18 18 16 16 16 16 16

core diameter of int. thread

11.40 14.00 17.30 19.00 21.30 26.90 35.50 45.50 52.50 57.80

min. mm

max. mm

11.280 13.860 17.260 19.060 21.160 26.780 35.480 45.480 52.480 57.780

11.430 14.010 17.410 19.210 21.310 27.030 35.730 45.730 52.730 58.030

NPT ANSI B 2.1 American tapered pipe thread 1:16 Version A (avoid if possible)

Version B

nom. threads Ø per inch 1/16

- 27 - 27 1/4 - 18 3/8 - 18 1/2 - 14 3/4 - 14 1 - 11.5 1 1/4 - 11.5 1 1/2 - 11.5 2 - 11.5 2 1/2 - 8 3 - 8

D1

ET

BT

BT

d1

UNC (UNC-STI) EG-threads for wire thread inserts ASME B18.29.1

Metric/metric fine EG-threads (EG M14 x 1.25) for wire thread inserts DIN 8140 nom. Ø

x pitch P mm

EG M 4 0.70 EG M 5 0.80 EG M 6 1.00 EG M 8 1.25 EG M10 1.50 EG M12 1.75 EG M14 x 1.25 EG M16 2.00

48

tapping size hole Ø DIN 336 mm

4.20 5.25 6.30 8.40 10.50 12.50 14.40 16.50

core diameter of int. thread min. mm

max. mm

4.152 5.174 6.217 8.271 10.324 12.379 14.271 16.433

4.292 5.334 6.407 8.483 10.560 12.644 14.483 16.733

nom. Ø

EG EG EG EG EG EG EG EG EG EG EG

No. 6 No. 8 No. 10 No. 12 1/4 5/16 3/8 7/16 1/2 9/16 5/8

threads

-

per inch

tapping size hole Ø DIN 336 mm

32 32 24 24 20 18 16 14 13 12 11

3.80 4.40 5.20 5.80 6.70 8.40 10.00 11.60 13.30 14.90 16.50

tapp. size hole Ø conical (B) D1

6.15 8.40 11.10 14.30 17.90 23.30 29.00 37.70 43.70 55.60 66.30 82.30

1/8

1:16

d1

tapp. size hole Ø cylindrical (A) d1

core diameter of int. thread min. mm

max. mm

3.678 4.338 5.055 5.715 6.624 8.242 9.868 11.506 13.122 14.747 16.375

3.879 4.524 5.283 5.944 6.868 8.489 10.127 11.783 13.393 15.032 16.673

6.39 8.74 11.36 14.80 18.32 23.67 29.69 38.45 44.52 56.56 67.62 83.52

cutting depth ET mm

9.29 9.32 13.52 13.83 18.07 18.55 22.29 22.80 22.80 23.20 31.75 33.74

cutting depth BT (min) mm

10.7 10.8 15.6 16.0 20.8 21.3 25.6 26.1 26.1 26.5 36.3 38.5

UNF (UNF-STI) EG-threads for wire thread inserts ASME B18.29.1 nom. Ø

EG No. 6 EG No. 8 EG No. 10 EG Nr. 12 EG 1/4 EG 5/16 EG 3/8 EG 7/16 EG 1/2 EG 9/16 EG 5/8

threads

-

per inch

tapping size hole Ø DIN 336 mm

core diameter of int. thread min. mm

40 36 32 28 28 24 24 20 20 18 18

3.70 4.40 5.10 5.70 6.60 8.25 9.80 11.50 13.10 14.70 16.25

3.644 4.321 4.999 5.682 6.546 8.166 9.754 11.389 12.974 14.592 16.180

max. mm

3.818 4.498 5.184 5.809 6.721 8.352 9.931 11.585 13.172 14.798 16.386


Tapping size hole and hole diameter

Recommended hole diameter for thread forming

Std. ISO metric threads DIN 13 nom. Ø

pitch

mm

M1 M1.2 M1.4 M1.6 M1.7 M1.8 M2 M 2.2 M 2.5 M3 M 3.5 M4 M 4.5 M5 M6 M7 M8 M9 M 10 M 11 M 12 M 14 M 16 M 18 M 20 M 22 M 24 M 27 M 30 M 33 M 36 M 39 M 42

tapp. size hole Ø

min. mm

mm

0.25 0.25 0.30 0.35 0.35 0.35 0.40 0.45 0.45 0.50 0.60 0.70 0.75 0.80 1.00 1.00 1.25 1.25 1.50 1.50 1.75 2.00 2.00 2.50 2.50 2.50 3.00 3.00 3.50 3.50 4.00 4.00 4.50

tapp. size hole Ø

0.90 1.10 1.28 1.46 1.56 1.66 1.85 2.00 2.30 2.80 3.25 3.70 4.20 4.65 5.55 6.55 7.40 8.40 9.30 10.30 11.20 13.10 15.10 16.90 18.90 20.90 22.70 25.70 28.50 31.50 34.30 37.30 40.10

ISO metric fine threads DIN 13

core Ø of int. thread 7H*

max. mm

min. mm

max. mm

0.89 1.09 1.27 1.45 1.55 1.65 1.84 2.01 2.28 2.78 3.23 3.68

0.92 1.12 1.30 1.48 1.58 1.68 1.88 2.05 2.32 2.85 3.30 3.76

0.729 0.929 1.075 1.221 1.321 1.421 1.567 1.713 2.013 2.459 2.850 3.242

0.819 1.019 1.181 1.346 1.446 1.546 1.679 1.838 2.138 2.639 3.050 3.466

4.62 5.52 6.52 7.36 8.36 9.26 10.26 11.15 13.05 15.05 16.83 18.83 20.83 22.62 25.62 28.40 31.40 34.17 37.17 39.95

4.71 5.62 6.62 7.47 8.47 9.38 10.38 11.29 13.20 15.20 17.02 19.02 21.02 22.80 25.80 28.60 31.60 34.40 37.40 40.20

4.134 4.917 5.917 6.647 7.647 8.376 9.376 10.106 11.835 13.835 15.294 17.294 19.294 20.752 23.752 26.211 29.211 31.670 34.670 37.129

4.384 5.217 6.217 6.982 7.982 8.751 9.751 10.531 12.310 14.310 15.854 17.854 19.854 21.382 24.382 26.921 29.921 32.420 35.420 37.979

nom. x pitch Ø

tapp. size hole Ø

mm

mm

min. mm

max. mm

min. mm

max. mm

2.35 2.85 3.85 3.80 4.80 5.30 5.65 6.65 7.65 7.55 8.65 8.55 9.65 9.55 9.40 10.65 10.55 11.55 11.40 11.30 13.55 13.40 13.30 14.55 14.30 15.55 15.30 16.55

2.35 2.85 3.85 3.78 4.78 5.28 5.62 6.62 7.62 7.52 8.62 8.52 9.62 9.52 9.36 10.62 10.52 11.52 11.36 11.26 13.52 13.36 13.26 14.52 14.26 15.52 15.26 16.52

2.38 2.88 3.88 3.83 4.83 5.33 5.70 6.70 7.70 7.62 8.70 8.62 9.70 9.62 9.47 10.70 10.62 11.62 11.47 11.38 13.62 13.47 13.38 14.62 14.38 15.62 15.38 16.62

2.121 2.621 3.621 3.459 4.459 4.959 5.188 6.188 7.188 6.917 8.188 7.917 9.188 8.917 8.647 10.188 9.917 10.917 10.647 10.376 12.917 12.647 12.376 13.917 13.376 14.917 14.376 15.917

2.221 2.721 3.721 3.639 4.639 5.139 5.424 6.424 7.424 7.217 8.424 8.217 9.424 9.217 8.982 10.424 10.217 11.217 10.982 10.751 13.217 12.982 12.751 14.217 13.751 15.217 14.751 16.217

M 2.5 M3 M4 M4 M5 M 5.5 M6 M7 M8 M8 M9 M9 M 10 M 10 M 10 M 11 M 11 M 12 M 12 M 12 M 14 M 14 M 14 M 15 M 15 M 16 M 16 M 17

x x x x x x x x x x x x x x x x x x x x x x x x x x x x

0.35 0.35 0.35 0.50 0.50 0.50 0.75 0.75 0.75 1.00 0.75 1.00 0.75 1.00 1.25 0.75 1.00 1.00 1.25 1.50 1.00 1.25 1.50 1.00 1.50 1.00 1.50 1.00

tapp. size hole Ø

core Ø of int. thread 7H*

nom. x pitch Ø

tapp. size hole Ø

mm

mm

min. mm

max. mm

min. mm

max. mm

16.30 17.55 17.30 17.10 19.55 19.30 23.55 23.30 23.10 26.30 29.30 32.30 35.30 38.30 41.30

16.26 17.52 17.26 17.05 19.52 19.26 23.52 23.26 23.05 26.26 29.26 32.26 35.26 38.26 41.26

16.38 17.62 17.38 17.20 19.62 19.38 23.62 23.38 23.20 26.38 29.38 32.38 35.38 38.38 41.38

15.376 16.917 16.376 15.835 18.917 18.376 22.917 22.376 21.835 25.376 28.376 31.376 34.376 37.376 42.376

15.751 17.217 16.751 16.310 19.217 19.751 23.217 22.751 22.310 25.751 28.751 31.751 34.751 37.751 42.751

M 17 M 18 M 18 M 18 M 20 M 20 M 24 M 24 M 24 M 27 M 30 M 33 M 36 M 39 M 42

x x x x x x x x x x x x x x x

1.50 1.00 1.50 2.00 1.00 1.50 1.00 1.50 2.00 1.50 1.50 1.50 1.50 1.50 1.50

tapp. size hole Ø

core Ø of int. thread 7H*

* M 2.5x0.35 up to M 4x0.35 tapping size hole of int. thread 6H

* M 2 up to M 2.5 tapping size hole of int. thread 6H

Tapping size hole diameter tolerance zone for thread forming (to DIN 13, section 50) Due to the tensile strength it is not necessary to adhere to the tapping size hole diameter tolerance class 6H; tolerance class 7H satisfies the requirement that the flank coverage of external and internal threads should not fall below 0.32xP. In addition, formed threads generally possess a higher tensile strength in comparison to cut threads thanks to an uninterrupted grain flow and subsequent work hardening. UNC-threads ASME B1.1 nom. Ø

No. 1 No. 2 No. 3 No. 4 No. 5 No. 6 No. 8 No. 10 No. 12 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1 -

pitch

tapp. size hole Ø

tapp. size hole Ø

UNF-threads ASME B1.1 core Ø of int. thread 2B

per inch

mm

min. mm

max. mm

min. mm

max. mm

64 56 48 40 40 32 32 24 24 20 18 16 14 13 12 11 10 9 8

1.68 1.98 2.28 2.55 2.90 3.15 3.80 4.35 5.00 5.75 7.30 8.80 10.30 11.80 13.30 14.80 17.90 21.00 24.00

1.67 1.97 2.27 2.54 2.89 3.14 3.78 4.33 4.97 5.72 7.26 8.77 10.27 11.77 13.28 14.78 17.85 20.95 23.95

1.70 2.01 2.32 2.59 2.94 3.19 3.82 4.39 5.03 5.80 7.37 8.88 10.37 11.88 13.39 14.90 17.97 21.10 24.12

1.425 1.694 1.941 2.157 2.487 2.642 3.302 3.683 4.343 4.978 6.401 7.798 9.144 10.592 11.989 13.386 16.307 19.177 21.971

1.580 1.872 2.146 2.385 2.698 2.896 3.531 3.937 4.597 5.258 6.731 8.153 9.550 11.024 12.446 13.868 16.840 19.761 22.606

nom. Ø

No. 1 No. 2 No. 3 No. 4 No. 5 No. 6 No. 8 No. 10 No. 12 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1 -

pitch

tapp. size hole Ø

tapp. size hole Ø

(Whitworth-) pipe thread G DIN EN ISO 228-1 core Ø of int. thread 2B

per inch

mm

min. mm

max. mm

min. mm

max. mm

72 64 56 48 44 40 36 32 28 28 24 24 20 20 18 18 16 14 12

1.70 2.00 2.30 2.60 2.90 3.20 3.85 4.45 5.10 5.95 7.45 9.05 10.55 12.10 13.65 15.25 18.35 21.40 24.45

1.69 1.99 2.29 2.59 2.89 3.19 3.83 3.43 5.07 5.92 7.42 9.02 10.48 12.08 13.61 15.21 15.30 21.35 24.40

1.72 2.03 2.34 2.63 2.93 3.24 3.88 4.49 5.13 5.99 7.50 9.10 10.58 12.18 13.72 15.32 18.41 21.49 24.54

1.473 1.755 2.024 2.271 2.550 2.819 3.404 3.962 4.496 5.359 6.782 8.838 9.728 11.328 12.751 14.351 17.323 20.269 23.114

1.610 1.910 2.197 2.459 2.741 3.023 3.607 4.166 4.724 5.588 7.036 8.636 10.033 11.608 13.081 14.681 17.678 20.650 23.571

nom. Ø

pitch

tapp. size hole Ø

inch

per inch

mm

G 1/16 G 1/8 G 1/4 G 3/8 G 1/2 G 5/8 G 3/4 G 7/8 G1 G 11/4

28 28 19 19 14 14 14 14 11 11

7.30 9.30 12.50 16.00 20.00 22.00 25.50 29.25 32.00 40.75

tapp. size hole Ø min. mm

max. mm

7.28 9.28 12.48 15.98 19.98 21.98 25.48 29.23 31.98 40.70

7.35 9.35 12.55 16.05 20.12 22.12 25.62 29.37 32.15 40.85

core Ø of int. thread min. mm

max. mm

6.561 8.566 11.445 14.950 18.631 20.587 24.117 27.877 30.291 38.952

6.843 8.848 11.890 15.395 19.172 21.128 24.658 28.418 30.931 39.592

49


DIN characteristic features

Characteristic features of the individual standards

DIN 371 in the master standard DIN 2184-1

Standard for machine taps with reinforced shank for standard ISO metric threads and ISO metric fine threads. Long design. Shank design in accordance with diameter ranges shown above (mm).

d1 = 0.9 … 2.6

d1 = > 2.6 … 10 l1

DIN 376 in the master standard DIN 2184-1

d1

Standard for machine taps with reduced shank for standard ISO metric threads. Long design. Diameter range d1 = 1.6 … 68 mm (≤ Ø M3, shank without square)

d1

Standard for machine taps with reduced shank for ISO metric fine threads. Long design. Diameter range d1 = 3 … 52 mm

l1

DIN 374 in the master standard DIN 2184-1 l1

DIN 352 in the master standard DIN 2184-2

Standard for hand and machine taps for standard ISO metric threads. Short design. Shank design in accordance with diameter ranges shown opposite (mm).

d1 = 1 … 2.6

d1 = > 2.6 … 6.35

d1 = > 6.35 … 68 l1

50


DIN characteristic features

Characteristic of the individual standards

DIN 2181

d1 = 1 … 2.6

in the master standard DIN 2184-2

Standard for hand and machine taps for standard ISO metric threads. Short design. Shank design in accordance with diameter ranges shown opposite (mm).

d1 = > 2.6 … 6.35

d1 = > 6.35 … 52 l1

DIN 5156

d1

in the master standard DIN 2184-1

l1

DIN 5157 in the master standard DIN 2184-2

d1

Standard for machine taps for BSP threads to DIN ISO 228 and for BSW threads to DIN 2999. Long design. Diameter ranges: BSP threads G 1/16“ ... G 4“ BSW threads W 1/16“... W 4“

Standard for machine taps for BSP threads to DIN ISO 228 and for BSW threads to DIN EN 10 226-1. Short design. Diameter ranges: BSP threads G 1/16“ ... G 4“ BSW threads W 1/16“...W 4“

l1

DIN 40 432 in the master standard DIN 2184-2

d1 l1

Standard for machine taps for steel armoured conduit threads to DIN 40 430. Short design. Diameter range: Pg 7 (12.5 mm) ... Pg 48 (59.3 mm) Will be replaced by DIN 374 ISO 3 6G.

51


DIN characteristic features

Characteristic features of the individual standards

DIN 2174

d1 = 2 … 2.6

in the master standard DIN 2184-1

d1 = 3 … 10

Standard for fluteless taps for standard ISO metric threads and ISO metric fine threads. Long design. Shank design in accordance with diameter ranges shown opposite (mm).

d1 = 10.5 … 24 l1

DIN 40 435

Standard for machine taps for tapped holes (EG) for wire thread inserts as in DIN 8140 for ISO metric threads. Standard thread tapped holes EG M2 to EG M52 and fine thread tapped holes EG M8 x1 to EG M48 x 3

in the master standard DIN 2184-1

EG M2 - EG M8

EG M10 - EG M52 l1

52


Comparison of Standards

DIN - International Standards

DIN 2184-1 DIN 2184-2

d1 SW

l2

d2 l1

d1 SW

l2

d2 l1

JIS B 4430 Japan Industrial Standard

d1 SW

l2

d2

l3 l1

d1 SW

l2

d2 l3 l1

ISO 529 d1 l2

d2 l1

d1 l2

d2 l1

ASME B94.9 The American Society of Mechanical Engineers

d1 SW

l2

d2 l1

d1 SW

l2

d2 l1

53


The characteristics of different thread types

Geometry drawing

Standard

Application

M ISO-metric thread

Geometry drawing

Standard

Application

MF ISO-metric fine thread DIN 13-1

P

General standard thread

DIN 13-2 to General fine DIN 13-11 thread

P 60°

d 2 =D 2

d 2 =D 2

60°

UNC Unified National Coarse Thread

UNF Unified National Fine Thread

ASME B1.1 General UN standard thread

P

ASME B1.1 General UN ISO-metric Fine Thread trapezoidal thread

P 60°

d 2, D 2

d 2, D 2

60°

UNEF Unified National Extra Fine Thread

UNS Unified Special Thread

ASME B1.1 General UN extra fine thread

P

ASME B1.1 General UN special thread

P 60°

d 2, D 2

d 2, D 2

60°

G Cylindrical Pipe Thread without thread sealing connections

PG steel conduit thread

DIN EN ISO Threads for 228-1 pipes, pipe connections and fittings

80°

d 2 =D 2

d 2 =D 2

55°

DIN 40430 Electrical cylindriengineering cal round thread

P

r

P

TR ISO-metric trapezoidal thread

S metric saw thread DIN 103

P

General, draw collets, rolling stock

DIN 513

When absorbing uni-directional forces

DIN 477

Threaded connection in gas cylinder bottles for valves

P

3° D 2 =d 2

30

W Whitworth Taper Thread DIN 477

Side connector and accessories for gas bottle valves

°

1:16

P 1°47´

30° 60°

54

55°

ANSI/ ASME B1.20.1

3°26´

°

3:25

d2

NPT American Standard Pipe Threads tapered for sealing 90

P= 1,814 relieved cone line

90

d 2 =D 2

P

r

r

55°

°

thread axis

D2

W Cylindrical Whitworth Thread

d 2 =D 2

30°

NPTF American Standard Pipe Thread tapered for dry sealing

Pipe threads and fittings 1:16

° 90

ANSI B1.20.3

P 1°47´ 30° 60°

Pipe threads and fittings


The characteristics of different thread types

Standard

Application

Threads for pipes, pipe connections and fittings

r

d2, D2

External thread for pipe threads and fittings (for in the thread sealing connections)

Rc Whitworth pipe thread tapered internal thread P

DIN ISO 10226-2

1°47´

r

d 2 (=D 2)

1:16

°

90

r

(hardly used in Europe, replaceable with pipe threads to ISO 7-1)

DIN ISO 5855-1

Internal thread for pipe threads and fittings (for in the thread sealing connections)

DIN 405

General, load hook, mining, food industry

ISO 3161

For the aerospace industry

Gühring standard

Self-locking thread transmission housing etc.

RD cylindrical round thread P

30°

R1

P rounded

60°

R

R

D 2, d 2

d

D

60° D, d

D3

For the aerospace industry

Vg valve thread

MSG lock nut thread DIN 7756

60° P

r

d2

Valves for car tyres manifold block

P ramp

D2

R

r

DIN EN 10226-1 (based on ISO 7-1) Replacement for DIN 2999-1

UNJ inch thread

P rounded

55°

Internal thread for pipe threads and fittings (for in the thread sealing connections)

MJ thread metric thread

P

r

D 2, d 2

55°

Rp Whitworth pipe thread cylindrical internal thread

R

d2 (=D 2)

90

°

r

DIN EN 10226-1 (based on ISO 7-1) replacement for DIN 2999-1

Internal thread for pipe threads and fittings

55°

R2

r

55°

1°47´

°

P

1:16

B.S. 93 British Standard

P

27°30´

R Whitworth pie thread tapered external thread 1:16

°

90

90

55°

Threads for pipes, pipe connections and fittings

D2

B.S. 93 British Standard

Threads for pipes, pipe connections and fittings

BSPT pipe thread tapered (identical to Rc)

3

BSP pipe thread cylindrical (identical to G) P

B.S. 84 British Standard Fine

P 55°

r

D 2, d 2

r

Application

BSF Whitworth fine thread cylindrical B.S. 84 British Standard

P 55°

r

Standard

D 2, d 2

BSW cylindrical Whitworth thread

Geometry drawing

d 2 =D 2

Geometry drawing

30°

60°

MFS DIN 8141

P

D2

d2

60°

Interference fits in Aluminium-cast alloys

external thread internal thread play

55


General information for tapping

Definitions and angles, centres and flute forms

chamfer lead length

length of driving square

shank dia.

driving square tread dia. thread length flute length overall length

chamfer

G JfA D J

thread pitch

α flute

= = = =

try square spiral point angle clearance angle rake angle

chamfer dia.

width of land

γfA

γ width of flute

δ

web dia. included angle of thread

land

Flute forms straight fluted, form C without spiral point

helix angle 15°

straight fluted, form B with spiral point

helix angle 40°

Types of centres (standard, to DIN 2197/DIN 2175)

4 solid cone

solid cone 1

stepped cone 2

on cutting section

on shank

5 chamfer

internal centre (form A or R to DIN 322 3 acc. to manufact. specification)

internal centre 6 (form A or R to DIN 322 acc. to manufact. specification)

Centre on cutting section Thread dia. range mm

with chamfer forms A, C, D, E

with chamfer form B

Centre on shank

≤ 4.2

1 O 1 2 OO 1 2 3 OOO 3 O

1 O 1 O 1 2 3 OOO 3 O

4 5 6 OOO 4 5 6 OOO 4 5 6 OOO 6 O

> 4.2 … 5.6 > 5.6 … 10.0 > 10.0

Coolant duct geometries

axial coolant delivery with axial coolant duct exit

56

axial coolant delivery with radial coolant duct exit in the flutes at the chamfer


General information for tapping

Chamfer forms - Selection and application When cutting internal threads, all the machining is carried out by the cutting teeth of the chamfer. Therefore, a decision on the best type of chamfer form has to be carefully made as both tool life and quality of thread are thereby greatly affected. Generally speaking, the form and length of chamfer depend on the type of hole to be tapped. The tapping of through holes does not normally give rise to any difficulties whereas the production of blind holes can create certain problems associated with the need to evacuate swarf in the reverse direction to the feed, i.e. up to the flutes of the tap and then cut off such swarf when the tap is reversed out of the hole.

The length of chamfer is determined by taking into account various conflicting factors. To avoid overloading, premature bluntness and oversize threads the number of chamfer cutting threads must not be kept too low. A too long chamfer lead, however, increases the torque and thus the danger of breakage. The spiral point with form B ensures a chip removal always in the direction of feed.

Through hole

Blind hole

Chamfer forms to DIN 2197 Form A 6…8 threads

long, 6 - 8 threads for short through holes

3.5…5.5 threads

medium, 3.5 - 5.5 threads, with spiral point, for all through holes and deep tapping holes in medium and long-chipping materials

2…3 threads

short, 2 - 3 threads for blind holes and generally for aluminium, grey cast iron and brass

3.5…5 threads

medium, 3.5 - 5 threads for short through holes

1.5…2 threads

extremely short, 1.5-2 threads, for blind holes with little run-out depth.

1…1.5 threads

extremely short, 1-1.5 threads, for blind holes with little run-out depth. Avoid use if possible.

Form B

Form C

Form D

Form E

Form F

57


General information for tapping

Chamfer forms - Selection and application Chamfer lead length for sets of 3 taps Form A

Chamfer lead length for sets of 2 taps

approx. 6 threads

first tap

Form D

approx. 4 threads

second tap

Form C

approx. 2 threads

bottoming tap

Form C

approx. 2 threads

bottoming tap

Application recommendations While in the first instance, the type of tapped hole required determines the chamfer, generally the tap geometry - i.e. form, number and direction of flutes, cutting angle, etc. - depend on the material to be machined and on the application. Basically, taps up to M16 for tapping ISO metric threads or for the engineering industry in general, have 3 flutes, and above this size 4 or more flutes. Taps with left-hand flutes and taps with spiral points remove the chips in the cutting direction or direction of feed and are therefore especially suitable for tapping through holes. Taps with straight flutes and long chamfer lead (form D) also give good results. As far as blind holes are concerned we recommend taps with right-hand spiral flutes or straight fluted taps with a short chamfer lead length.

Through hole

Tools with right-hand spiral flutes have the chip flow in the backward direction, i.e. up the flutes. The chamfer lead length is designed in such a way so that during the return movement chips do not jam and are reliably sheared off. The tapping of aluminium, grey cast iron and brass requires taps with a short chamfer lead length, regardless of whether through or blind holes are required. In these materials a long chamfer lead length would act as a core drill with chip breaker grooves and would only drill the tapping size hole to the major diameter instead of cutting a thread. Straight fluted taps without spiral point are general purpose tools and have the disadvantage of not showing optimum results in particular materials. Itâ&#x20AC;&#x2122;s well worth the effort to take the trouble of ascertaining the most suitable tool for any given metal-cutting task.

Blind hole

Straight fluted tap with spiral point

Right-hand spiral fluted tap

Left-hand spiral fluted tap

Straight fluted tap with short chamfer lead

Straight fluted tap with long chamfer lead

58

approx. 5 threads

Form D first tap


General information for tapping

Tolerance ďŹ elds to DIN EN 22857

8G 8H 7G 7H

6G

6H

6H +0,1

5G 4G

7GX

5H 6GX

4H 6HX 4HX

ISO 3

ISO 2

ISO 1

Nut thread Tolerance H

Tolerance fields Tap

Nut thread Tolerance G

8G 8H 7G 7H

6G 7GX

6H 6GX 5H

5G 4G

6HX 4H 4HX

Nut thread Tolerance H

Tolerance fields Fluteless tap

Nut thread Tolerance G

59


General information for tapping

Taps for ISO metric threads DIN EN 22857 (extract)

Thread clearances and fits Fits between internal and external threads are separated by a diagonal stroke, as for example 6H/6g (internal/external thread). The fit has to be selected in conjunction with the appropriate thread connection. The tolerance zones of the tolerance classes fine, medium and coarse are allocated to three screw-in lengths short S), normal (N) and long (L). Generally, the following rules apply for selecting a tolerance class:

Fine tolerance zone (S): For precision threads, when only a small variation in the fit is permitted.

Screw-in lengths The quality of thread connection is also affected by the screwin length. The ISO tolerance system was, especially as regards the pitch diameter, divided into three groups, i.e.

S N L

(Short) (Normal) (Long)

= short screw-in length = normal screw-in length = long screw-in length

The following fit should be selected for normal screw-in length N: To ensure a tighter fit of thread connections, we recommend for short screw-in lengths a narrower fit. As far as long screwin lengths are concerned, fits with a larger tolerance must be used to compensate for pitch deviations.

Medium tolerance zone (N): General application Coarse tolerance zone (L): There are no special precision requirements and in cases where production difficulties may occur, e.g. thread production in hot-rolled rods, deep blind holes or plastic components.

Thread fits with different flank clearance diameter d of external thread

diameter d of external thread

h3

Ao 2

60

d

d3

P

Thread fit with narrow flank (H/g- or H/e-fit) by basic deviation of external thread.

d2

D1

D2

D

P 2

r

H 6

H1- Ao 2

external thread

h3

Explanation of symbols D D1 D2 d d2 d3 P D H Ao Au

= = = = = = = = = = =

Ø nom. of internal thread Tapping size hole Ø of internal thread Basic pitch Ø of internal thread Ø nom. of external thread Basic pitch Ø of external thread Tapping size hole Ø of external thread Pitch Included angle of thread Height of peak to peak thread profile Upper tolerance limit Lower tolerance limit

d - Ao

P

d2 - Ao

P 2

r

Thread fit with wide flank clearance (G/g-fit or G/e-fit) in external and internal thread.

diameter D of internal thread

internal thread

external thread

d3 - Ao

d3

Zero profile of thread fit without flank clearance (H/h-fit).

D 2 + Au

H 6

P

d

D1

D2

D

P 2

D + Au

r

d2

external thread

internal thread

H 6

H1

h3

internal thread

D1 + Au

H1- Ao/2-Au/2

diameter D of internal thread

Au 2 Ao/2

diameter d of external thread

diameter D of internal thread


General information thread forming

Thread production by pressure deformation Fluteless taps are used for the forming of internal threads without chip removal. In contrast to conventional tapping where material is cut from the workpiece, thread forming is a pressure deformation process without chip removal for the production of internal threads. During the process the material is cold formed without interrupting the grain flow. According to DIN 8583, thread forming is described as “pressing the thread into the workpiece with a tool possessing a spiral working area”. The spiral threaded, polygonal portion of the fluteless tap is “screwed” into the pre-drilled workpiece with an appropriate constant feed rate equal to the thread pitch. Hereby the thread profile is pressed gradually via the forming lead into the material of the workpiece so to speak. Subsequently, the pressure in the deformation zone exceeds the compression limit, the workpiece becomes ductile and is deformed. The material yields radially, “flows” along the thread profile in the unoccupied base of the tool and forms the minor diameter of the nut thread. The flow process creates the process specific form pockets (claws). The tapping size hole diameter is heavily dependent on the formability of the material, the workpiece geometry and the required effective depth of the thread. In comparison to conventional tapping, a larger diameter tapping size hole should be selected. With a larger diameter tapping size hole the load on the tool is reduced whilst increasing the tool life. Thanks to the uninterrupted grain flow, the loading capacity of the thread remains sufficient with a 50% effective thread depth. The partially formed crests of the thread with decreasing effective thread depth are a typical characteristic of threads produced by the thread forming process. With the flanks of the thread fully formed, they have no influence on the tensile strength of the thread. If necessary, the required deformation level of the thread should be determinded by performing a test.

Process The production of internal threads without chip removal (thread forming) in comparison to conventional tapping

Fluteless tap

Lubrication is of significant importance. The lubrication prevents material from building up on the thread flanks and ensures that the necessary torque for the forming process is not too high. Therefore, under no circumstances should there ever be a break-down in lubrication! Preference should be given to lubricants such as cooling agents of oils containing graphite such as those used in rolling processes. Always follow the rule: “The better the lubrication the easier the thread forming process!”

It offers the following advantages • no chip formation. • one tool for the production of threads in through and blind holes. • application in wide range of materials. • no cutting errors. • pitch and angle of thread errors that can occur with thread cutting are eliminated. • internal threads produced by thread forming possess a higher tensile strength particularly at the thread flanks thanks to the so-called “uninterrupted grain flow” and the cold forming process. • the surface of the thread is improved. • fluteless taps can be applied at higher speeds because the formability of many materials increases with the forming speed. This does not have a negative effect on the tool life. • reduced danger of breakage through rigid design

Flow characteristics of the material during thread forming and the deformation process

D D2 Dk H P A

Conventional tap

pressure points

= nom.-Ø = flank-Ø = hole-Ø = profile height = pitch = form pocket (claw) finished nut thread

flutes

fluteless tap

P D2

oil grooves

Dk formed thread

forming lead

cut thread

chamfer lead

A D

forming lead

H

workpiece

61


General information thread forming

“Profile“ – Gühring’s new fluteless tap generation Characteristics and advantages Conventional fluteless taps, produced by a grinding process only, show traces of microscopic, very fine grinding marks on the surface of the tool. This also applies to the threaded portion of the tool required to perform the thread forming operation. This surface topography (structure) has a negative effect on the friction between the tool and the material to be re-formed as well as on the herewith associated heat development, on the necessary torque and last but not least on the wear of the pressure points of the fluteless tap. In addition, the “grinding marks” encourage the build-up of the material to be re-formed in the thread flanks of the fluteless tap. This is also called cold welding.

For the user, a longer tool life and increased cutting speeds are the benefits of this special process. The tool life can be increased considerably depending on the material to be machined and the application condi-tions. A 100% increase in tool life is not unusual.

Further improvements in quality are achieved when the fluteless tap is produced completely in one setting and with one grinding wheel - set-up with a special roll. Pitch errors between the thread crests and former lead transition area do not occur as with the conventional grinding process.

The improved surface topography is not only of benefit to tools with bright finish. Particularly coated tools also benefit from the new process. Outer contour and forming lead greatly determine the performance of the fluteless tap. Numerous tests have shown that fluteless taps with optimal pressure point geometry and quantity achieve increased tool life and dimensional accuracy.

Thanks to a special process to improve the surface topography (structure), Gühring’s new Profile fluteless taps no longer possess these “grinding marks”. This has been confirmed in research and tool life studies in varying materials under production conditions.

Cross section of fluteless tap

Surface of a conventional fluteless tap

Optimised surface of a Gühring Profile fluteless tap

The principle

Types of tapping size hole with fluteless taps without oil grooves for thread depth ≤ 1 x D

X

detail x D1 = flank diameter D = nominal diameter

forming lead

D

with fluteless taps with oil grooves for all thread depths

D1

tapping size hole-Ø

nom.-Ø

62

thread portion

for thread depth ≥ 1 x D


General information thread forming

Definitions, angles, centres, thread tolerances and fits

Thread portion guide section

chamfer lead length

oil grooves

length of driving square

shank dia.

driving square

without oil grooves

thread length

with oil grooves flute length overall length

Types of centres (standard, to DIN 2197/DIN 2175) 4

solid cone 1

stepped cone 2

on cutting section

on shank

solid cone

5 chamfer

internal centre (form A or R to DIN 322 3 acc. to manufact. specification)

internal centre 6 (form A or R to DIN 322 acc. to manufact. specification)

Centre on cutting section Thread dia. range mm

with chamfer forms A, C, D, E

with chamfer form B

Centre on shank

â&#x2030;¤ 5.6

1 O 1 2 3 OOO 3 O

1 O 1 2 3 OOO 3 O

4 5 6 OOO 4 5 6 OOO 6 O

> 5.6 â&#x20AC;Ś 12.8 > 12.8

Thread tolerances and fits Fits between internal and external threads are separated by a diagonal stroke, as for example 6H/6g (internal/external thread). The fit has to be selected in conjunction with the appropriate thread connection. The tolerance zones of the tolerance classes fine, medium and coarse are allocated to three screw-in lengths short S), normal (N) and long (L). Generally, the following rules apply for selecting a tolerance class:

Medium tolerance zone (N): General application Coarse tolerance zone (L): There are no special precision requirements and in cases where production difficulties may occur, e.g. thread production in hot-rolled rods, deep blind holes or plastic components.

Fine tolerance zone (S): For precision threads, when only a small variation in the fit is permitted. Screw-in lengths The quality of thread connection is also affected by the screwin length. The ISO tolerance system was, especially as regards the pitch diameter, divided into three groups, i.e.

The following fit should be selected for normal screw-in length N: To ensure a tighter fit of thread connections, we recommend for short screw-in lengths a narrower fit.

S (Short) = short screw-in length N (Normal) = normal screw-in length L (Long) = long screw-in length

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General information thread forming

Tapping size hole diameter With fluteless tapping, the tapping size hole diameter influences the distinction of the formed thread. A too small tapping size hole diameter results in an over-forming of the thread which must definitely be prevented because this can lead to

tool breakage. A too large tapping size hole is acceptable with certain tolerances because formed threads have a sufficient loading capacity from a 50% bearing depth.

The thread M18x1.5 mm example clearly shows the influence of the tapping size hole diameter selection:

M 18 x 1.00 M 18 x 1.50 M 18 x 2.00

17.55 17.30 17.10

17.52 17.26 17.05

17.62 17.38 17.20

16.917 16.376 15.835

17.217 16.751 16.310

Pre-drilling Ø 17.1 mm

Pre-drilling Ø 17.3 mm

Pre-drilling Ø 17.4 mm

Tapping size hole diameter is too small: • thread over-formed • no form pocket (claw) • profile too high

Optimal tapping size hole diameter: • thread fully formed • small form pocket (claw) • optimal height of profile

Tapping size hole diameter is too large: • thread not formed • large form pocket (claw) • height of profile too low min. max.

Tapping size hole diameter tolerance zone to DIN 13, part 50

Influence of the tapping size hole on tool life, torque and process reliability The optimisation of the pre-drilling diameter is especially worthwhile in mass production. The larger it is, the longer the tool life and the less the required torque is. The graphic clearly shows the relationship.

Tool life

Torque Minimum dimension

64

Nominal dimension

Maximum dimension


General information thread forming

Lubrication for thread forming For tool design four different cases should be differentiated between. Vertical machining of a blind hole

Lubrication grooves and internal coolant delivery is not necessary; external coolant delivery is sufficient (Axial coolant is recommended for very deep threads).

Vertical machining of a through hole (> 1.5xDN)

Lubrication grooves are required; internal coolant delivery is not necessary. Via the lubrication grooves the externally delivered coolant can advance to the form edges (Radial coolant is recommended for very deep threads).

Horizontal machining of blind hole

Lubrication grooves and internal coolant delivery is necessary. Axial coolant exit is sufficient.

Horizontal machining of through hole

Lubrication grooves are required. Internal coolant delivery with radial exit is recommended.

Cooling lubricants with fluteless taps With fluteless taps the main task of the coolant is lubrication. The better the lubrication with the maximum concentration, the longer the tool life. There are two different types of lubricant: Oil based lubricants These are mineral oils with the best lubricating characteristics. They reduce friction and achieve optimal life. Soluble lubricants These soluble lubricants are a concentrate thinned to an emulsion prior to the use with water. The concentration must not be below 6%. A content more than 12% is ideal in order to achieve a long life thanks to a good lubrication effect.

6

7 Tool life

8

9

10

12

20

50

100

Concentration content of the cooling lubricant (in %)

Friction

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