Ring gauges used to check external thread.
Plug gauges used to check internal thread.
GO & NOGO, RH(right hand) & LH(left hand) available Metric, United Inch( UNEF, UNF, UNC, UN, UNS), Stub ACME, ACME, BSPP, PSPT, NPT, Trapezoidal (Tr), and Whitworth thread gauges, etc.
Material: GCR15
Hardness: 58-65 HRC
Tolerance: +/-0.001mm~+/-0.0025mm
Certificate: Factory test Data or offical certificate Welcome Customized
Items | Specification | Test Range | Tolerance |
Metric gauge | M Series | M1~M500 | 6g,6H,7g,7H |
US Units gauge | UN UNC UNF UNEF UNS NPSC NPSM NPSH NPSF NPSI NPSL NH STI | 0~12'' | 2A,2B |
Jap Units gauge | PT | 0~12'' | 2A,2B |
Imperial standard gauge | BSW BSF | 0~12'' | 2A,2B |
Taper gauge | NPT NPTF Z BKG R RB Rc RP PT ZG WKG BSPT ANPT PTF | 0~6'' | 2A,2B |
Trapezoidal gauge | Tr ACME STUB-ACME | 0~6'' | 2g,3g,4g |
other | API G PF PS BSP ST BSPP DIN spline gauge | 0~6'' |











