JBO Thread Ring Gauge (NoGo) - Metric Coarse - Right Hand - 6h - M39 x 4 End Mill Holders 160 mm Gauge Length for

160 mm Gauge Length for Flexible Setup: Supports a wide range of cutter configurations

Balanced Design with 100mm Gauge Length: Optimized for spindle speeds up to 25

durable edges while preserving part geometry

Rigid 4-flute design: Four flutes provide stability and reduced deflection

JBO Thread Ring Gauge (NoGo) - Metric Coarse - Right Hand - 6h - M39 x 4 End Mill Holders 160 mm Gauge Length forThe JBO Thread Ring Gauge (NoGo) Metric Coarse Right Hand 6h M39 x 4 is a precision inspection tool used to verify the external thread diameters of fasteners and threaded components. Its designed for engineers, machinists, quality teams, and workshop professionals who need quick, reliable checks to confirm parts meet your specifications. Crafted from hardened steel and engineered for durability, this NoGo gauge withstands daily wear in busy work