JBO Thread Ring Gauge (NoGo) - Metric Coarse - Right Hand - 6e - M39 x 4 NCDC Drill Chuck helping you achieve precise finishes

helping you achieve precise finishes on your workpieces

Built for durability with high‑quality materials

delivering reliable performance in challenging finishing applications

This arbor combines durable construction with tight manufacturing tolerances and quality control to deliver dependable performance day after day

Durable HSS‑E alloy (M35 cobalt): Delivers enhanced wear resistance and edge retention for longer tool life even in tougher materials

JBO Thread Ring Gauge (NoGo) - Metric Coarse - Right Hand - 6e - M39 x 4 NCDC Drill Chuck helping you achieve precise finishesThe JBO Thread Ring Gauge (NoGo) Metric Coarse, Right Hand, 6e, M39 x 4 is a precision inspection tool designed to verify external thread diameters to exacting standards. Its ideal for quality control teams, machinists, inspectors, and maintenance crews who need fast, reliable checks on metric coarse threads on a range of components. Crafted from hardened steel, this NoGo gauge offers outstanding durability and wear resistance to hold its accuracy