JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M39 x 1 FMH FLH FHH S&E A&NF M&D Constructed from durable carbide

Constructed from durable carbide

M45 x 3 with 6H tolerance: Enables precise go/no-go verification of internal threads to the exact size and tolerance required

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

and workshop environments that demand accurate

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 Constructed from durable carbideThe 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