ISO Metric Thread Gauges

ISO Metric Thread 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 M – 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 1.6mm to 300mm & Pitches covered are 0.35mm to 8mm.
For more Technical Details on ISO Metric Threads download, Technical Information sheet from link given below.
For Plain diameter measurement, we offer Plain Plugs, Plate type gauges, Plain Rings, Setting Rings, Snap Gauges.

We also offer Special gauges as per the customers drawings & requirements.

Gauge Type Diameter Range Pitches in mm Tolerance Class
Thread Plug Gauges. 1.6mm - 300 mm 0.35 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 - 260mm 0.4 to 6mm
Pitches above 6mm up to 8mm can be supplied based on customer request.
6g
or any other class as per customer requirement
Plain Plugs to check Minor Diameter of Internal Threads 1.6mm - 300mm  
Plain Rings to check Major Diameter of External Threads. 1.5mm - 300mm
Check Plug Gauges To check NEW Go & Nogo Thread Ring Gauges as per above sizes
Wear Check Plug Gauges To check / calibrate USED Go & Nogo Thread Ring Gauges as per above sizes
Check Ring Gauges To check NEW Go & Nogo Thread Plug Gauges as per above sizes
Wear Check Ring Gauges To check / calibrate USED Go & Nogo Thread Plug Gauges as per above sizes

Recommended Tolerance classes for Internal Threads (Plug Gauges)

Fine
Medium Coarse
Tolerance position 'G' Tolerance position 'H'
S N L S N L
- - - 4H 5H 6H
(5G) 6G (7G) 5H 6H 7H
- (7G) (8G) - 7H 8H

*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 Coarse Tolerance position 'e' Tolerance position 'f' Tolerance position 'g' Tolerance position 'h'
S N L S N L S N L S N L
-   - - - - - (4g) (5g4g) (3h4h) 4h (5h4h)
- 6e (7e6e) - 6f - (5g6g) 6g (7g6g) (5h6h) 6h (7h6h)
- (8e) (9e8e) - - - - 8g (9g8g) - -    

*Tolerance classes in bold are first choice,
Tolerance classes in normal print are second
choiceTolerance classes in parentheses are third choice.