JBO Thread Ring Gauge (GO) - Metric Coarse - Right Hand - 4h - M3 x 0.5 M&D the OZ12 Collet helps you

the OZ12 Collet helps you streamline setups

With a tight kerf tolerance and a fine tooth count

accurate hole finish across a range of steels and alloys

helping you finish jobs faster and with improved surface quality

JBO Thread Ring Gauge (GO) - Metric Coarse - Right Hand - 4h - M3 x 0.5 M&D the OZ12 Collet helps youJBO Thread Ring Gauge (GO) for Metric Coarse threads is a precision inspection tool designed to verify external M3 x 0. 5 threads on fasteners and mating components. This GO gauge supports quick go no go checks, helping ensure parts fit correctly and meet the coarse thread standard. Built for reliability in busy workshops, it is ideal for engineers, machinists, inspectors, and quality teams who demand consistent thread measurements. Go No Go quick