Unified Thread Gauges
Unified Threads are used for general purpose fastening applications for Imperial system of units.
Specification :
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 Unified 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 |
| 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
| Tolerance Class for Plug gauges (Internal threads) | Tolerance Class for Ring gauges (External threads) | Application |
|---|---|---|
| 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. |