JBO Thread Ring Gauge (GO) - UNJF - Right Hand - 3A - 9/16 x 18 FHH 6g is a precision tool

6g is a precision tool designed to verify external threads on metric fine-pitch components

Combi Design for Cylindrical and Face Cutters: One arbor supports both cylindrical and face milling cutters

This GO gauge provides a quick pass/fail check against the M58 x 2 metric fine thread standard and 6H tolerance

Used in daily inspection workflows

Left-hand spiral flute with right-hand cutting: Enables smooth chip flow and a clean

JBO Thread Ring Gauge (GO) - UNJF - Right Hand - 3A - 9/16 x 18 FHH 6g is a precision toolThe JBO Thread Ring Gauge (GO) for UNJF, Right Hand, 3A class, 9 16 x 18 is a precision inspection tool designed to verify external thread diameters. It helps machinists, quality technicians, engineers, and shop floor personnel quickly confirm that threaded components conform to exact UNJF specifications. Crafted from hardened steel for durability, this GO gauge withstands daily use in demanding environments and delivers reliable, repeatable