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Table of ISA Standard Tolerances in Microns Designation

Application

up to 3mm.

d9

3 to 6mm.

6 to 10mm.

10 to 18mm. 18 to 30mm.

30 to 50mm.

-20 -45

-30 -60

-40 -76

-50 -93

-65 -117

-80 -142

f7

Ground surfaces

-6 -16

-10 -22

-13 -28

-16 -34

-20 -41

-25 -50

F7

Drill guides-I.D.

+16 +7

+22 +10

+28 +13

+34 +16

+41 +20

+50 +25

-2 -6

-4 -9

-5 -11

-6 -14

-7 -16

-9 -20

g5 g6

Ejector pins

-2 -8

-4 -12

-5 -14

-6 -17

-7 -20

-9 -25

h4

Guide pins (die sets)

0 -3

0 -4

0 -4

0 -5

0 -6

0 -7

0 -4

0 -5

0 -6

0 -8

0 -9

0 -11

0 -6

0 -8

0 -9

0 -11

0 -13

0 -16

h7

0 -10

0 -12

0 -15

0 -18

0 -21

0 -25

h9

0 -25

0 -30

0 -36

0 -43

0 -52

0 -62

h 11

0 -60

0 -75

0 -90

0 -110

0 -210

0 -250

H5

+4 0

+5 0

+6 0

+8 0

+9 0

+11 0

h5 h6

Punches D.C. F(pt)

H7

Punch guides-I.D Reamers

+10 0

+12 0

+15 0

+18 0

+21 0

+25 0

H8

Die inserts or buttonsI.D.(A&B)

+14 0

+18 0

+22 0

+27 0

+33 0

+39 0

j5

+2 -2

+3 -2

+4 -2

+5 -3

+5 -4

+6 -5

j6

+4 -2

+6 -2

+7 -2

+8 -3

+9 -4

+11 -5

j7

+7 -2

+9 -3

+10 -5

+12 -6

+13 -8

+15 -10

+10 +1

+12 +1

+15 +2

+18 +2

+7 +2

+9 +4

+12 +6

+15 +7

+17 +8

+20 +9

+9 +2

+12 +4

+15 +6

+18 +7

+21 +8

+25 +9

+13 +6

+16 +8

+19 +10

+23 +12

+28 +15

+32 +17

p6

+16 +9

+20 +12

+24 +15

+29 +18

+35 +22

+42 +26

r6

+19 +12

+23 +15

+28 +19

+34 +23

+41 +28

+50 +34

s5

+18 +14

+24 +19

+29 +23

+36 +28

+44 +35

+54 +43

s6

+22 +15

+27 +19

+32 +23

+39 +28

+48 +35

+59 +43

k6

Die inserts-O.D(B)

m5 m6

Punches E,F(shk) Dowels

n6

Die inserts-O.D.(A) Guide bushes-O.D.

www.hales.com.au

Table of ISA Standard Tolerances in Microns

(1 micron = 0.001mm / 25.4 micron = 0.001 inches

115

115 press tooling  
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