JBO Thread Ring Gauge (GO) - Metric Coarse - Right Hand - 6e - M12 x 1.75 NCDC Drill Chuck while the carbide body delivers

while the carbide body delivers reliable wear resistance for repeated use

25 mm size and ISO H5 tolerance guarantee consistent hole diameters to BS 328/4 standards

while the taper shank and standard length simplify setup with existing tooling

features a left‑hand spiral flute with right‑hand cutting

long-term performance across a range of materials and applications

JBO Thread Ring Gauge (GO) - Metric Coarse - Right Hand - 6e - M12 x 1.75 NCDC Drill Chuck while the carbide body deliversThe JBO Thread Ring Gauge GO (Metric Coarse, Right Hand, 6e, M12 x 1. 75) is a precision inspection tool designed for engineers, machinists, inspectors, and quality teams. Built from hardened steel with carefully controlled dimensions, it provides a fast, reliable way to verify external threads against the M12 x 1. 75 coarse thread standard. This GO gauge helps ensure proper fit and function of metric coarse fasteners and mating components, reducing