JBO Thread Ring Gauge (NoGo) - UNF - Left Hand - 2A - No. 6 x 40 Power Milling Chucks delivering smoother operation and improved

delivering smoother operation and improved surface finishes

3mm x 20mm – is a high-performance milling tool designed to cut very hard materials with precision

and maintains consistent results across different machines and workflows

stub-length carbide tool designed for through‑coolant machines

and more dependable performance job after job

JBO Thread Ring Gauge (NoGo) - UNF - Left Hand - 2A - No. 6 x 40 Power Milling Chucks delivering smoother operation and improvedThe JBO Thread Ring Gauge (NoGo) is a precision tool designed to verify external UNF threads. Sized for Left Hand, 2A class, No. 6 x 40, it enables quick, confident checks in manufacturing, automotive, and aerospace environments. The No Go design helps you identify non conforming threads at a glance, supporting accurate assembly and reliable performance. Manufactured from hardened steel, this gauge delivers durability in busy inspection rooms. Its