Product Name: Go and No Go 7h 8h Thread Pitch Dia Gauge Model NO.: GB/T 3934 Customized: Customized Shape: Round Usage: For Inspection Certification: ISO Precision Gauge: Precision Gauge Material: Steel Test Methods: Through Check Method Measurement Object: Inside Diameter Type: Thread Plug Gauges Raw Material: Gcr15 Measuring Range: M1~M300 Accuracy: 0.001mm +-0.0005mm Hardness: 58-65 HRC Tolerance: +/-0.001mm~+/-0.0025mm Trademark: Perfect Transport Package: Plastic Box +Inner Box+Carton Specification: GB/T 3934 Origin: Jiangsu China HS Code: 9017300000 Product Description TypeSeriesMeasuring rangeStandard ToleranceMetric gaugeMM1~M3006g,6H,7g,7HUS Units gaugeUN UNC UNF UNEF UNS NPSC NPSM NPSH NPSF NPSI NPSL NH STI0~12''2A,2BJap Units gaugePT0~12''2A,2BImperial standard gaugeBSW BSF0~12''2A,2BTaper gaugeNPT NPTF Z BKG R RB Rc RP PT ZG WKG BSPT ANPT PTF0~6''2A,2BTrapezoidal gaugeTr ACME STUB-ACME0~6''2G,3G,4GotherAPI G PF PS BSP ST BSPP DIN spline gauge0~6''