JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6h - M4 x 0.5 Tapping Chucks long-length carbide end mill designed

long-length carbide end mill designed for precision work in mold and die manufacturing

inspection passes

Material: HSS‑E (high‑speed steel with cobalt) for improved heat resistance and wear life

notch-free neck minimizes stress concentrations

Extended Reach without Compromising Rigidity: Increases reach for deep hole drilling and extended milling while maintaining rigidity for accurate

JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6h - M4 x 0.5 Tapping Chucks long-length carbide end mill designedThe JBO Thread Ring Gauge (NoGo) is a precision inspection tool designed to verify external thread diameters on metric fasteners and threaded components. Specifically crafted for M4 x 0. 5 right hand threads with a 6h tolerance, this NoGo gauge enables quick, accurate conformance checks during manufacturing, assembly, and quality control workflows. Crafted from hardened steel for lasting accuracy, the gauge stands up to wear in busy workshops and