JBO Thread Ring Gauge (GO) - UNF - Left Hand - 2A - No. 3 x 56 RPTECH Carbide k10 intermediate-precision grade: Delivers

Carbide k10 intermediate-precision grade: Delivers a durable

This reamer is engineered to deliver tight bore control and a clean finish

ISO H5 Tolerance with BS 328/4 Compliance: Delivers tight diameter control and reliable compatibility with standard tooling for repeatable results

wear‑resistant construction: Hardened steel stands up to daily use

dependable cutting performance when shaping graphite parts

JBO Thread Ring Gauge (GO) - UNF - Left Hand - 2A - No. 3 x 56 RPTECH Carbide k10 intermediate-precision grade: DeliversJBO Thread Ring Gauge (GO) for UNF Left Hand 2A No. 3 x 56 is a precision inspection tool designed to verify external thread diameters on components with UNF threads. This GO gauge is tailored for left hand threads and the No. 3 x 56 size, helping engineers, machinists, and inspectors confirm standard conformance quickly and consistently. Manufactured from hardened steel, this ring gauge resists wear in busy workshop environments and remains accurate