JBO Thread Ring Gauge (GO) - UNF - Right Hand - 3A - 5/16 x 24 Milling Cutter Arbors Built with HSS (M2) and

Built with HSS (M2) and a straight shank

repeatable results in production and precision work alike

Built to DIN 206‑B standards with ISO H5 tolerance

The carbide composition and precise geometry are suited for durable performance in metalworking environments

Precise H5 tolerance with DIN 212 B compatibility: Tight size control ensures repeatable results across parts

JBO Thread Ring Gauge (GO) - UNF - Right Hand - 3A - 5/16 x 24 Milling Cutter Arbors Built with HSS (M2) andThe JBO Thread Ring Gauge (GO) UNF Right Hand 3A 5 16 x 24 is a precision measurement tool designed to quickly verify external threaded diameters. Its ideal for manufacturers, machine shops, maintenance technicians, and QA teams that need fast, reliable checks on threaded components to confirm they meet exact size and fit requirements. Crafted from hardened steel with a durable finish, this GO gauge delivers dependable performance in demanding work