JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M56 x 4 A&NF long-lasting cutting edges that resist

long-lasting cutting edges that resist wear across multiple reaming tasks

Neck Length: 5 mm tapered neck for extended reach

smooth curves on curved features for high-precision parts

delivering deep-reach capability and tight radii with consistently smooth surface finishes

31 mm is an intermediate precision reamer designed to finish holes with accuracy and a smooth surface

JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M56 x 4 A&NF long-lasting cutting edges that resistThe JBO Thread Ring Gauge (NoGo) Metric Fine Right Hand 6g M56 x 4 is a precision tool designed to help you quickly verify external thread diameters against exact metric fine thread standards. Ideal for engineers, inspectors, machinists, and quality teams, it streamlines the process of confirming whether threaded components meet the required specifications. Built for demanding environments, this gauge is crafted from hardened steel to deliver long