ISO Metric Gauges

ISO Metric Gauges are most commonly used Gauges in the Industry.
Specification :
ISO standard :  Basic Dimensions : ISO 965 Part 1,2,3 – 1998, Gauging Practice: ISO 1502-1996.
Indian standard : Basic Dimensions: IS 14962 Part 1,2,3 – 2001, Gauging Practice: IS 2334 – 2001.
ANSI standard :  Basic Dimensions: ANSI / ASME B 1.13 M , Gauging Practice: ANSI / ASME B 1.16 1984.
DIN standard :  Basic Dimensions & Gauging Practice: DIN 13 – 1999.
BS standard :  Basic Dimensions: B.S. 3643 Part I & II – 2007, Gauging Practice: B.S 919 Part III – 2007.
JIS standard :  Basic Dimensions: JIS B 0209, Gauging Practice: JIS B 0251-2008.
Manufacturing Range :
Diameter 1.6 mm to 300mm & Pitches covered are 0.35mm to 8 mm.
We also offer Special gauges as per the customers drawings & requirements.

Gauge TypeDiameter RangePitches in mmTolerance Class             

Thread Plug Gauges.
1.6mm - 300 mm0.35 to 6mm Pitches above 6mm up to 8mm can be supplied based on customer request.6H or any other class as per customer requirement
Thread Ring Gauges.2mm - 260mm0.4 to 6mmPitches above 6mm up to 8mm can be supplied based on customer request.6gor any other class as per customer requirement
Check Plug Gauges1.6mm - 300mmTo check NEW Go & Nogo Thread Ring Gauges as per above sizes
Wear Check Plug Gauges1.5mm - 300mmTo check / calibrate USED Go & Nogo Thread Ring Gauges as per above sizes
Check Ring GaugesTo check NEW Go & Nogo Thread Plug Gauges as per above sizes
Wear Check Ring GaugesTo check / calibrate USED Go & Nogo Thread Plug Gauges as per above sizes
Check Ring GaugesTo check NEW Go & Nogo Thread Plug Gauges as per above sizes

Recommended Tolerance classes for Internal Threads (Plug Gauges)

FineTolerance position 'G'  Tolerance position 'H'  
Medium CoarseSNLSNL
---4H5H6H
(5G)6G(7G)5H6H7H
-(7G)(8G)-7H8H

*S –  Short length of Thread engagement
N –  Normal length of Thread engagement
L-   Long length of Thread engagement

Recommended Tolerance classes for External Threads (Ring Gauges)

Fine Medium CoarseTolerance position 'e'  Tolerance position 'f'  Tolerance position 'g'  Tolerance position 'h'  
SNLSNLSNLSNL
------(4g)(5g4g)(3h4h)4h(5h4h)
-6e(7e6e)-6f-(5g6g)6g(7g6g)(5h6h)6h(7h6h)
-(8e)(9e8e)----8g(9g8g)- -