JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M4 x 0.5 Face Mill Arbors - Through Coolant Use it to achieve accurate

Use it to achieve accurate diameters and reliable hole quality in a variety of metals and alloys

repeatable seating: G2

4-Flute Design with Variable Helix: Enables aggressive material removal while maintaining stability and improving chip flow for cooler

Precise Contouring with Ball Nose: Ball nose geometry delivers smooth

while the carbide edge resists wear

JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M4 x 0.5 Face Mill Arbors - Through Coolant Use it to achieve accurateThe JBO Thread Ring Gauge (NoGo) is a precision tool for verifying external metric threads, specifically M4 x 0. 5, in a compact ring gauge format. Its ideal for engineers, machinists, quality inspectors, and assembly teams who need fast, reliable thread checks against standard specifications. Designed for tough shop environments, the gauge features hardened steel construction, right hand orientation, and metric fine tolerance (6g). This combination