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17 mm precision: ensures tight
it delivers controlled material removal and consistent hole size across metalworking projects
Shank type: Straight shank for compatibility with standard collets and tooling holders
Hardened steel construction for durability: Built to resist wear and maintain measurement accuracy even after repeated use in busy inspection environments
The left-hand spiral flute facilitates efficient chip evacuation in suited applications
JBO Thread Ring Gauge (NoGo) - UNJC - Right Hand - 3B - No. 4 x 40 Die & Mould Collet Chucks 17 mm precision: ensures tightThe 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
