JBO Thread Ring Gauge (NoGo) - Metric Coarse - Left Hand - 6e - M12 x 1.75 S&E Left-hand spiral flute with right-hand

Left-hand spiral flute with right-hand cutting: optimizes chip evacuation and cutting action for consistent hole size and a clean surface finish

this tool is built to ISO H5 tolerance (-0 to +0

so you receive a tool tailored to your specification with a clear despatch window of 24–48 hours

Use this reamer to achieve precise hole finishes with repeatable results across manufacturing

JBO Thread Ring Gauge (NoGo) - Metric Coarse - Left Hand - 6e - M12 x 1.75 S&E Left-hand spiral flute with right-handThe JBO Thread Ring Gauge (NoGo) is a precision inspection tool designed to verify external threads on metric coarse fasteners. Its ideal for engineers, machinists, quality teams, and workshop professionals who need fast, reliable checks to ensure parts meet the M12 x 1. 75 left hand coarse thread standard. Crafted from hardened steel, this gauge delivers durable, long lasting performance in busy environments. Its straightforward design makes it easy