JBO Thread Plug Gauge - UNEF Go-No/Go - Left Hand - 2B - 7/8 x 20 4 Month Widin supporting reliable performance in mold

supporting reliable performance in mold & die work and challenging steels while preserving dimensional accuracy

The combination of cobalt-enhanced HSS and a spiral flute provides reliable wear resistance and efficient debris removal

enabling faster cycle times and more predictable results across production runs and precision prototypes alike

while the two-flute configuration balances stiffness with effective chip evacuation

this arbor is built from high-quality materials to withstand demanding machining environments

JBO Thread Plug Gauge - UNEF Go-No/Go - Left Hand - 2B - 7/8 x 20 4 Month Widin supporting reliable performance in moldThe JBO Thread Plug Gauge is a precision inspection tool designed to verify internal UNEF threads in holes and assemblies. With a clear go no go design, it delivers quick, reliable checks that help quality teams, machinists, and inspectors confirm parts meet Unified thread standards. Ideal for manufacturing, automotive, and aerospace environments, this gauge supports fast acceptance decisions and consistent threaded hole readiness. Left hand