JBO Thread Ring Gauge (GO) - Metric Fine - Left Hand - 6g - M52 x 2 FHH Manufactured from hardened steel and

Manufactured from hardened steel and precision-ground

The straight shank provides reliable alignment in common tooling setups

DIN 8051 B/H5 tolerance for precise holes: Tight size control ensures repeatable diameters across production runs

Its durable construction and precise tolerance translate to higher first-pass success

this hand reamer delivers smooth

JBO Thread Ring Gauge (GO) - Metric Fine - Left Hand - 6g - M52 x 2 FHH Manufactured from hardened steel andThe JBO Thread Ring Gauge (GO) Metric Fine Left Hand 6g M52 x 2 is a precision tool designed to verify external thread diameters against the M52 x 2 metric fine standard. It is ideal for inspectors, machinists, quality teams, and engineers who need quick, reliable pass fail checks during component assembly, maintenance, and quality control. Crafted from hardened steel, this GO ring gauge resists wear and maintains tight tolerances after repeated use