Page 1


Continuing to lead the field, in the forth coming future…


Our Roots

Hello

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s d r a w d E G. Ged Edwards

Managing Director


The OrIGInal GauGe COMPanY - QualITY, SerVICe, relIaBIlITY

Quality, serViCe, reliaBilty Whether it’s a high-quality go/nogo thread plug gauge or a measuring system incorporating mechanical, pneumatic and electronic technology, our business depends on meeting your needs. The following pages describe the high-standard of products and services offered by The Original Gauge Company. This coupled with a wealth of experience provides the foundation of our on-going commitment to deliver the best possible service at the most effective price.

natiOnwide CaliBratiOn & rePair serViCe We operate a national network of UKAS accredited laboratories and instrument repair facilities through our sister company, Bowers Calibration.

• Comprehensive calibration and repair service for all your precision measuring instruments.

• Service packages for calibration, repair and replacement, tailored to suit your requirements on a contract basis.

• Nationwide collection and delivery service. • On-site calibration for instruments that cannot be moved from site. sheffield Birmingham

0000

0000

0000

fast traK Customers who require non-stock products as a matter of urgency can benefit from our FastTrack service. This ensures that the orders are speedily processed and despatched - sometimes within hours, but alway to a set, guaranteed delivery time. For fast answers to your questions, for prompt delivery and first class service, you can rely on The Original Gauge Company. We’ve been in the business for more than 70 years so we know how to help.

04 The Original Gauge Company

Poole

southern area repair Centre

the Original Gauge Company unit 1, hamilton Business Park Gore road, new Milton hampshire, Bh25 6Th Tel: 01425 000000 Fax: 01425 000000 email: info@thegauge.co.uk website: www.thegauge.co.uk


Contents Screw Gauges - Plugs, Rings and Calipers ISO Metric Srew Thead Gauges Unified Screw Thread Gauges BSW/BSF Screw Thread Gauges BA and G Series Screw Thread Gauges Other Thread Form and Specifications Tin Coated and Hard Chrome Thread Gauges R/Rc Taper Screw Thread Gauge Value Stem and Cylinder Neck Gauge NPT Taper Screw Tread Gauges NPTF Taper Screw Thread Gauges

6 8 10 11 12 13 14 15 16 17

Plain Gauges - Plugs, Rings, Pin Sets, Calipers, Barrel, Spherical Plain Gauges, Limits and Fits Plain Plug Gauges - Steel Plain Plug Gauges - Carbide Plain Ring Gauges - Steel, Carbide Plain Taper Gauges - Luer, Anaesthetic, Machine Tapers Boxed Precision Pin Sets Thread Measuring Cylinders Hole Position, Barrel Depth and Groove Gauges Master Gauges, Plate, Gap and Adjustable Gap Gauges Ball Gauges, Reference Balls and Rok-It Gauges

18 18 19 20 21 22 23 24 25 26

Aerosol Crimp Gauges Aerosol Crimp Gauges

27

Air Gauging Air Plug, Air Ring and Air Caliper Gauges Electrinic and Air Electronic Measuring Systems

28 30

Indicating Gauges and Measuring Instruments DIGI-THREAD - Digital Thread Measuring Gauges Kroeplin Measuring Gauges Two Point Bore Measuring System Bowers XT and XTA Bowers XTH Universal Gauges Calipers, Snaps, Depth and Height Gauges Moore & Wright Micrometers, Combination Sets

31 32 33 34 35 36 37 38

Complementary Products Renishaw Probes and Accessories Spline Gauges and Master Gears Slip Gauages Kafer Dial Gauges

39 39 39 39

Training and UKAS Calibration Training Services UKAS Calibration Services

40 40

The Original Gauge Company 05


Gauges for testing ISO metric screw threads to BS 3543:1981, and BS 919:Pt 3:1968.

BS 3643 Pt1 and Pt2 specifies the fundamental deviations and tolerances for e.g. 5H, 6H, 6G, and 7H for internal threads, and 4h, 6g, 6e,8g for external threads.

BS 3643 comprises two parts. Part 1 provides information and data on the basic principles, and is based on ISO 965/1 and ISO 965/3.

Generally 6H/6g are regarded as “medium fit”. The nut and bolt deviations and tolerance zones are illustrated here.

Part 2 tabulates diameters of course, constant and fine pitch series threads, and is based on ISO 965/2.

NUT 5

BS 919: Pt3: 1968 contains the recommended gauging system for checking ISO metric threads in accordance with BS 3643. It is based on ISO 1502. The basic profile of the ISO threads is shown below.

0

6

7

6

H

G 4

0 h

6

8 6

BOLT g

g

e

H/h = zero = basic size Product tolerance: 8 > 6 > 5 etc

P P/8

H/8 3/8 H

5/8 H

30˚ D1,d1

D,d

60˚

D2,d2

ISO Metric Plug, Ring and Caliper Thread Gauges

ISO Metric Plug, Ring and Caliper Thread Gauges

H/4

P/2 90˚

P/4 Axis of screw thread

D = major diameter of internal thread d = major diameter of external thread D2 = pitch diameter of internal thread d2 = pitch diameter of external thread D1 = minor diameter of internal thread d1 = minor diameter of external thread P = pitch H = height of fundamental triangle = P/2tan30˚

06 The Original Gauge Company

H

BS 919 Pt3: 1968 specifies the limits for gauges for testing product thread. The basis for determining the gauge limit is the magnitude of the product tolerance. i.e. the larger the product tolerance, the larger the gauge limit regardless of diameter. The gauges recommended to be used are as follows:For testing internal product threads a double ended screw plug gauge (style E) may be used.

This gauge comprises a Go element which tests that the Major and Effective diameters are not too small (maximum material limit). It also test for pitch or flank errors in the product thread. The Not Go element tests only that the Effective diameter is not too large (minimum material limit). The Minor diameter of the internal thread can be checked separately using a double ended plain plug gauge. For testing external product threads Go and Not Go ring gauges or caliper gauges having Go and Not Go anvils may be used.


Wherever preacticable, external product threads should be tested by means of ring gauges as these provide a full functional test of all thread features: pitch, angle, thread form and size.

Screw Plugs

Gauges for testing products in the preplating condition can be supplied. For internal threads class 6G may be used as a pre-plating condition for 6H after plating. For external threads class 6e may be used as a pre-plating condition for 6g after plating. When ordering gauges for other plating conditions it is helpful to advvise either the effective diameters required, or the amount of plating to be applied.

Coarse Pitch

Size

fine Pitch

The regular checking of gauges in constant use is important. Plug gauges should be checked by direct measurement of the Major and Effective diameters, using a Floating Carriage Measuring Machine or similar specialised equipment. Ring gauges may be checked by direct measurement, or preferably by using Go check and Not Go Wear check plug gauges, as specified in BS 919: Pt3: 1968.

Go

The Original Gauge Company Limited have a fully equipped calibration laboratory, with UKAS accreditation, capable of carring out calibrations of screw and plain gauges, and ancillary equipment.

0000

NOGO

Screw Rings

‘E’

GO

Class of fit

NOGO

Calipers

Roller

Knife

Class of fit Class of fit Class of fit

M1.6X0.35 M1.8X0.35 M2.X0.40 M2.2X0.45 M2.5X0.45 M3.X0.50 M3.5X0.60 M4.X0.70 M4.5X0.75

6H 0330 0332 0334 0336 0338 0340 0342 0344 0346

6H 0331 0333 0335 0337 0339 0341 0343 0345 0347

6H 0330A 0332A 0334A 0336A 0338A 0340A 0342A 0344A 0346A

6g 1100 1102 1104 1106 1108 1110 1112 1114 1116

6g 1101 1103 1105 1107 1109 1111 1113 1115 1117

Any 1940 1941 1942 1943 1944 1945 1946 1947 1948

Any 2140 2141 2142 2143 2144 2145 2146 2147 2148

M5.X0.80 M6.X0.00 M7.X0.00 M8.X1.25 M9.X1.25 M10.X1.50 M11.X1.50 M12.X1.75 M14.X2.00 M16.X2.00 M18.X2.50 M20.X2.50 M22.X2.50 M24.X3.00 M27.X3.00 M30.X3.50 M33.X3.50 M36.X4.00 M39.X4.00 M42.X4.50

0348 0350 0352 0354 0356 0358 0360 0362 0364 0366 0368 0370 0372 0374 0376 0378 0380 0382 0384 0386

0349 0351 0353 0355 0357 0359 0361 0363 0365 0367 0369 0371 0373 0375 0377 0379 0381 0383 0385 0387

0348A 0350A 0352A 0354A 0356A 0358A 0360A 0362A 0364A 0366A 0368A 0370A 0372A 0374A 0376A 0378A 0380A 0382A 0384A 0386A

1118 1121 1123 1126 1128 1130 1132 1134 1136 1138 1140 1143 1146 1149 1152 1155 1158 1161 1164 1167

1119 1122 1124 1127 1129 1131 1133 1134 1136 1139 1141 1144 1147 1150 1153 1156 1159 1163 1165 1168

1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968

2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168

M1.6X0.35 M1.8X0.35 M2.X0.40 M2.2X0.45 M2.5X0.45 M3.X0.50 M3.5X0.60 M4.X0.70 M4.5X0.75 M5.X0.80 M6.X0.00 M7.X0.00 M8.X1.25 M9.X1.25 M10.X1.50 M11.X1.50 M12.X1.75 M14.X2.00 M16.X2.00 M18.X2.50 M20.X2.50 M22.X2.50 M24.X3.00 M27.X3.00 M30.X3.50 M33.X3.50 M36.X4.00 M39.X4.00 M42.X4.50

0330 0332 0334 0336 0338 0340 0342 0344 0346 0348 0350 0352 0354 0356 0358 0360 0362 0364 0366 0368 0370 0372 0374 0376 0378 0380 0382 0384 0386

0331 0333 0335 0337 0339 0341 0343 0345 0347 0349 0351 0353 0355 0357 0359 0361 0363 0365 0367 0369 0371 0373 0375 0377 0379 0381 0383 0385 0387

0330A 0332A 0334A 0336A 0338A 0340A 0342A 0344A 0346A 0348A 0350A 0352A 0354A 0356A 0358A 0360A 0362A 0364A 0366A 0368A 0370A 0372A 0374A 0376A 0378A 0380A 0382A 0384A 0386A

1100 1102 1104 1106 1108 1110 1112 1114 1116 1118 1121 1123 1126 1128 1130 1132 1134 1136 1138 1140 1143 1146 1149 1152 1155 1158 1161 1164 1167

1101 1103 1105 1107 1109 1111 1113 1115 1117 1119 1122 1124 1127 1129 1131 1133 1134 1136 1139 1141 1144 1147 1150 1153 1156 1159 1163 1165 1168

1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968

2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168

The Original Gauge Company 07


Gauges for testing ISO metric screw threads to BS 3543:1981, and BS 919:Pt 3:1968.

BS 3643 Pt1 and Pt2 specifies the fundamental deviations and tolerances for e.g. 5H, 6H, 6G, and 7H for internal threads, and 4h, 6g, 6e,8g for external threads.

BS 3643 comprises two parts. Part 1 provides information and data on the basic principles, and is based on ISO 965/1 and ISO 965/3.

Generally 6H/6g are regarded as “medium fit”. The nut and bolt deviations and tolerance zones are illustrated here.

Part 2 tabulates diameters of course, constant and fine pitch series threads, and is based on ISO 965/2.

NUT 5

BS 919: Pt3: 1968 contains the recommended gauging system for checking ISO metric threads in accordance with BS 3643. It is based on ISO 1502. The basic profile of the ISO threads is shown below.

0

6

7

6

H

G 4

0 h

6

8 6

BOLT g

g

e

H/h = zero = basic size Product tolerance: 8 > 6 > 5 etc

P P/8

H/8 3/8 H

5/8 H

30˚ D1,d1

D,d

60˚

D2,d2

ISO Metric Plug, Ring and Caliper Thread Gauges

ISO Metric Plug, Ring and Caliper Thread Gauges

H/4

P/2 90˚

P/4 Axis of screw thread

D = major diameter of internal thread d = major diameter of external thread D2 = pitch diameter of internal thread d2 = pitch diameter of external thread D1 = minor diameter of internal thread d1 = minor diameter of external thread P = pitch H = height of fundamental triangle = P/2tan30˚

06 The Original Gauge Company

H

BS 919 Pt3: 1968 specifies the limits for gauges for testing product thread. The basis for determining the gauge limit is the magnitude of the product tolerance. i.e. the larger the product tolerance, the larger the gauge limit regardless of diameter. The gauges recommended to be used are as follows:For testing internal product threads a double ended screw plug gauge (style E) may be used.

This gauge comprises a Go element which tests that the Major and Effective diameters are not too small (maximum material limit). It also test for pitch or flank errors in the product thread. The Not Go element tests only that the Effective diameter is not too large (minimum material limit). The Minor diameter of the internal thread can be checked separately using a double ended plain plug gauge. For testing external product threads Go and Not Go ring gauges or caliper gauges having Go and Not Go anvils may be used.


Wherever preacticable, external product threads should be tested by means of ring gauges as these provide a full functional test of all thread features: pitch, angle, thread form and size.

Screw Plugs

Gauges for testing products in the preplating condition can be supplied. For internal threads class 6G may be used as a pre-plating condition for 6H after plating. For external threads class 6e may be used as a pre-plating condition for 6g after plating. When ordering gauges for other plating conditions it is helpful to advvise either the effective diameters required, or the amount of plating to be applied.

Coarse Pitch

Size

fine Pitch

The regular checking of gauges in constant use is important. Plug gauges should be checked by direct measurement of the Major and Effective diameters, using a Floating Carriage Measuring Machine or similar specialised equipment. Ring gauges may be checked by direct measurement, or preferably by using Go check and Not Go Wear check plug gauges, as specified in BS 919: Pt3: 1968.

Go

The Original Gauge Company Limited have a fully equipped calibration laboratory, with UKAS accreditation, capable of carring out calibrations of screw and plain gauges, and ancillary equipment.

0000

NOGO

Screw Rings

‘E’

GO

Class of fit

NOGO

Calipers

Roller

Knife

Class of fit Class of fit Class of fit

M1.6X0.35 M1.8X0.35 M2.X0.40 M2.2X0.45 M2.5X0.45 M3.X0.50 M3.5X0.60 M4.X0.70 M4.5X0.75

6H 0330 0332 0334 0336 0338 0340 0342 0344 0346

6H 0331 0333 0335 0337 0339 0341 0343 0345 0347

6H 0330A 0332A 0334A 0336A 0338A 0340A 0342A 0344A 0346A

6g 1100 1102 1104 1106 1108 1110 1112 1114 1116

6g 1101 1103 1105 1107 1109 1111 1113 1115 1117

Any 1940 1941 1942 1943 1944 1945 1946 1947 1948

Any 2140 2141 2142 2143 2144 2145 2146 2147 2148

M5.X0.80 M6.X0.00 M7.X0.00 M8.X1.25 M9.X1.25 M10.X1.50 M11.X1.50 M12.X1.75 M14.X2.00 M16.X2.00 M18.X2.50 M20.X2.50 M22.X2.50 M24.X3.00 M27.X3.00 M30.X3.50 M33.X3.50 M36.X4.00 M39.X4.00 M42.X4.50

0348 0350 0352 0354 0356 0358 0360 0362 0364 0366 0368 0370 0372 0374 0376 0378 0380 0382 0384 0386

0349 0351 0353 0355 0357 0359 0361 0363 0365 0367 0369 0371 0373 0375 0377 0379 0381 0383 0385 0387

0348A 0350A 0352A 0354A 0356A 0358A 0360A 0362A 0364A 0366A 0368A 0370A 0372A 0374A 0376A 0378A 0380A 0382A 0384A 0386A

1118 1121 1123 1126 1128 1130 1132 1134 1136 1138 1140 1143 1146 1149 1152 1155 1158 1161 1164 1167

1119 1122 1124 1127 1129 1131 1133 1134 1136 1139 1141 1144 1147 1150 1153 1156 1159 1163 1165 1168

1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968

2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168

M1.6X0.35 M1.8X0.35 M2.X0.40 M2.2X0.45 M2.5X0.45 M3.X0.50 M3.5X0.60 M4.X0.70 M4.5X0.75 M5.X0.80 M6.X0.00 M7.X0.00 M8.X1.25 M9.X1.25 M10.X1.50 M11.X1.50 M12.X1.75 M14.X2.00 M16.X2.00 M18.X2.50 M20.X2.50 M22.X2.50 M24.X3.00 M27.X3.00 M30.X3.50 M33.X3.50 M36.X4.00 M39.X4.00 M42.X4.50

0330 0332 0334 0336 0338 0340 0342 0344 0346 0348 0350 0352 0354 0356 0358 0360 0362 0364 0366 0368 0370 0372 0374 0376 0378 0380 0382 0384 0386

0331 0333 0335 0337 0339 0341 0343 0345 0347 0349 0351 0353 0355 0357 0359 0361 0363 0365 0367 0369 0371 0373 0375 0377 0379 0381 0383 0385 0387

0330A 0332A 0334A 0336A 0338A 0340A 0342A 0344A 0346A 0348A 0350A 0352A 0354A 0356A 0358A 0360A 0362A 0364A 0366A 0368A 0370A 0372A 0374A 0376A 0378A 0380A 0382A 0384A 0386A

1100 1102 1104 1106 1108 1110 1112 1114 1116 1118 1121 1123 1126 1128 1130 1132 1134 1136 1138 1140 1143 1146 1149 1152 1155 1158 1161 1164 1167

1101 1940 2140 1103 1941 2141 1105 1942 2142 1107 1943 2143 1109 1944 2144 1111 1945 2145 1113 1946 2146 1115 1947 2147 1117 1948 2148 1119 1949 2149 1122 1950 2150 1124 1951 2151 1127 1952 2152 1129 1953 2153 1131 1954 2154 1133 1955 2155 1134 1956 2156Company The Original Gauge 1136 1957 2157 Unit 1, 1958 Hamilton Business Park 1139 2158 1141 1959 2159Gore Road 1144 1960 2160New Milton 1147 1961 2161Hampshire 1150 1962 2162 BH25 6TH 1153 1963 2163 1156 1964 2164 Tel: 01425 000000 1159 1965 2165 Fax: 01425 000000 1163 1966 2166 Email: info@thegauge.co.uk 1165 1967 2167 1168website: 1968www.thegauge.co.uk 2168

The Original Gauge Company 07

/test  

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