Unified Threads are used for general purpose fastening applications for Imperial system of units.
We manufacture Unified Gauges as per American Standard : Basic Dimensions as per ANSI B 1.1:2003 & Gauging Practice as per ANSI/ASME B 1.2-1983.
We also manufacture Unfied Gauges as per British Standards (BS).Basic Dimensions as per BS 1580 Part 1 & 2 - 2007 & Gauging Practice as per BS 919 Part 1-2007.
Manufacturing Range :
Thread Plug & Ring Gauges from No. 4 (0.112") to 12"
|Gauge Type||Diameter Range (Inch)||TPI (Threads per Inch)||Tolerance Class|
|Thread Plug Gauges.||No.4 (0.112"-12")||48, 44, 40, 36, 32, 28, 24, 20, 18,
16, 14, 13, 12, 11.5, 11, 10, 9, 8,7,6, 5, 4.5, 4 TPI not covered here can be supplied based on customer request
|As given in below Table|
|Thread Ring Gauges.||No.4 (0.112"-10.25")||48, 44, 40, 36, 32, 28, 24, 20, 18, 16, 14, 13, 12, 11.5,11,10, 9, 8,7,6, 5, 4.5, 4 TPI not covered here can be supplied based on customer request.||As given in below Table|
|Plain Plugs||To check Minor Diameter of Internal Threads as per above Diameter range.|
|Plain Rings||To check Major Diameter of External Threads as per above Diameter range.|
|Check Plug Gauges||To check NEW Go & Nogo Ring Gauges as given above.|
|Wear Check Plug Gauges||To check / calibrate USED Go & Nogo Ring Gauges as given above.|
|Check Ring Gauges||To check NEW Go & Nogo Plug Gauges as given above.|
|Wear Check Ring Gauges||To check / calibrate USED Go & Nogo Plug Gauges as given above.|
|Tolerance Class for Plug gauges (Internal threads)||
Tolerance Class for Ring gauges (External threads)
|1B||1A||Where quick assembly is needed, even when threads are dirty / damaged. Wide tolerances for male and female threads.|
|2B||2A||Corresponds to medium fit and used for general applications, which requires free assembly.|
|3B||3A||Where closer fit is required.|
*We manufacture AG class Thread Ring Gauges for lubricant and high temperature applications as recommended in B.S. 1580, Part I & II 1962 specification.