JBO Thread Ring Gauge (GO) - UNC - Right Hand - 2A - No. 1 x 64 Tapping Chucks this GO gauge resists wear

this GO gauge resists wear and delivers durable

The tool is built around a DIN 8051-B taper shank with ISO H5 tolerance

The 4 mm diameter is well-suited for narrow slots and tight tolerances

2-flute ball-nose milling tool designed specifically for mold and die work

The JBO Thread Plug Gauge is a precision tool designed to verify metric coarse thread holes with confidence

JBO Thread Ring Gauge (GO) - UNC - Right Hand - 2A - No. 1 x 64 Tapping Chucks this GO gauge resists wearThe JBO Thread Ring Gauge (GO) UNC Right Hand 2A No. 1 x 64 is a precision Go gauge used to verify external thread diameters against UNC standards. Designed for machinists, inspectors, and quality teams, it provides quick, reliable checks during assembly and inspection. Built from hardened steel, it resists wear in demanding environments and maintains accurate dimensions over time. The No. 1 x 64 size with 2A class and right hand threading ensures