JBO Thread Ring Gauge (NoGo) - UNJF - Right Hand - 3A - 3/4 x 16 Power Milling Chucks consistent grip in ER40 collet

consistent grip in ER40 collet chucks

high-quality results across materials and applications

you can trust it to deliver reliable results from setup through final quality checks

achieving consistent bore quality in a range of machining scenarios—from engineering prototypes to production runs

not a stocked finished tool

JBO Thread Ring Gauge (NoGo) - UNJF - Right Hand - 3A - 3/4 x 16 Power Milling Chucks consistent grip in ER40 colletJBO Thread Ring Gauge (NoGo) for UNJF, Right Hand, 3A, 3 4 x 16 is a purpose built instrument for verifying external thread diameters against Unified standard threads. Its designed for machinists, inspectors, and quality teams who need fast, reliable checks to ensure proper fitment and consistent quality. The NoGo design helps instantly identify non conforming threads, reducing inspection time and preventing mismatched assemblies. NoGo design for