JBO Thread Ring Gauge (GO) - Metric Coarse - Left Hand - 6g - M12 x 1.75 FMH high-accuracy milling and drilling applications

high-accuracy milling and drilling applications

It’s built for engineering teams

41 mm with a straight shank and spiral flute

consistent results across detailed work—from delicate engravings to complex 3D surfaces

JBO Thread Ring Gauge (GO) - Metric Coarse - Left Hand - 6g - M12 x 1.75 FMH high-accuracy milling and drilling applicationsThe JBO Thread Ring Gauge GO for Metric Coarse (Left Hand) is a precision inspection tool designed to verify external threads quickly and accurately. Its ideal for engineers, machinists, inspectors, and quality teams who need to confirm that M12 x 1. 75 metric coarse threads meet exact specifications so assemblies fit reliably. Crafted from hardened steel for durability and wear resistance, this GO ring gauge preserves its precise dimensions through