JBO Thread Ring Gauge (NoGo) - UNF - Left Hand - 2A - No. 6 x 40 Power Milling Chucks clean cuts: coolant is delivered

clean cuts: coolant is delivered through the tool to the cutting edge

stub-length carbide tool designed for through‑coolant machines

and maintains consistent results across different machines and workflows

and more dependable performance job after job

This hand reamer enables precise enlargement of drilled holes to the exact size with a smooth finish

JBO Thread Ring Gauge (NoGo) - UNF - Left Hand - 2A - No. 6 x 40 Power Milling Chucks clean cuts: coolant is deliveredThe 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