Threads Plug gauges

Made by steel. Manufactured according numerous standards: M, UNC, UNF, UNEF, UN, UNS, UNR, UNRS, UNRC, UNRF, UNREF, G, BSP, BSW, BSF, TR, NPT, NPSC, NPSL, NPSM, NPTR, ANPT, NPTF, NPSF, NPSI, PTF, R, RC, RP, BSPT, S, MJ, UNJ, Pg, ACME ...