JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M39 x 1 FMH FLH FHH S&E A&NF M&D Its compact 15 mm diameter

Its compact 15 mm diameter and 5 mm bore fit standard slitting saw setups

and workshop environments that demand accurate

predictable diameter control ensures reliable hole dimensions across production runs and assemblies

and workshops needing repeatable bore accuracy in steel and non-ferrous materials

JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M39 x 1 FMH FLH FHH S&E A&NF M&D Its compact 15 mm diameterThe JBO Thread Ring Gauge (NoGo) is a precision tool designed to verify external threads against the M39 x 1 metric fine standard. Built for right hand threads (6g tolerance), it helps shops, manufacturers, and QA teams quickly confirm part conformance and identify non conforming components with confidence. Made from hardened steel, this gauge delivers durable, long lasting performance in demanding environments while delivering reliable, repeatable