JBO Thread Plug Gauge (GO) - Metric Fine - Right Hand - 6H - M138 x 1.5 Face Mill Arbors - Through Coolant 15 mm precision size for

15 mm precision size for accurate final hole dimensions and tight tolerances

precise milling when used with HSK63A spindles

helping maintain accuracy and minimize tool deflection in hard-to-reach areas

delivering predictable results

it delivers solid durability and better performance under heat

JBO Thread Plug Gauge (GO) - Metric Fine - Right Hand - 6H - M138 x 1.5 Face Mill Arbors - Through Coolant 15 mm precision size forThe JBO Thread Plug Gauge (GO) Metric Fine, Right Hand, 6H, M138 x 1. 5 is a precision go gauge designed to verify internal threads in a wide range of components and assemblies. It helps machinists, inspectors, and quality teams quickly confirm that threaded holes meet the exact size and class required for reliable assembly. Designed for durability and repeatable results, this GO gauge delivers fast, confident checks on threaded holes, supporting