JBO Thread Ring Gauge (NoGo) - UNJC - Right Hand - 3B - No. 4 x 40 Die & Mould Collet Chucks The left-hand spiral flute facilitates

The left-hand spiral flute facilitates efficient chip evacuation in suited applications

Hardened steel construction for durability: Built to resist wear and maintain measurement accuracy even after repeated use in busy inspection environments

25 is a precision tool designed for inspectors

The rib-processing design supports reliable performance

17 mm precision: ensures tight

JBO Thread Ring Gauge (NoGo) - UNJC - Right Hand - 3B - No. 4 x 40 Die & Mould Collet Chucks The left-hand spiral flute facilitatesThe JBO Thread Ring Gauge (NoGo) is a precision tool designed to verify external thread diameters to UNJC standards. Its an essential instrument for manufacturing, automotive, and aerospace environments where quick, reliable thread checks matter. The NoGo design makes non conforming threads easy to spot, helping you prevent incorrect assemblies and reduce rework on the shop floor. Designed for right hand threads and sized as No. 4 x 40 with a 3B