MJ Thread Gauges

MJ Thread Gauges

MJ Threads are used in Aeronautical Industry - for Metric system.

Specification :

ISO 5855 - Part I - 1999 & ISO 1502:1996, OR ANSI B 1.21 M - 1997 & ANSI B1.22 M - 1985, IS 10980:1984 & IS 2334:2001

Manufacturing Range :

Thread Plug Gauges M1.6- M300
Thread Ring Gauges : M2 - M260.

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.
As given in below Table
Thread Ring Gauges. 2mm - 260mm 0.4 to 6mm
Pitches above 6mm up to 8mm can be supplied based on customer request.
As given in below Table
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

TOLERANCE CLASS


Type of thread
Tolerance Class for Before coating threads. Tolerance Class for After coating or Uncoated finish threads.
  If pitch is 2mm or smaller Pitch more than 2mm
External Thread (Ring Gauges) 4g6g 4g6g 4h6h
Internal Thread (Plug Gauges) Nominal diameter up to 5mm Nominal diameter 6mm and above 4G6G
4G5G
4G6G
4G5G
'4H6H'
'4H5H'