JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M39 x 1.5 S&E and quality teams confirm parts

and quality teams confirm parts meet tolerances and fit reliably in assemblies

it supports repeatable finishes across a range of materials

you can expect fresh sharpening and consistent performance

wear-resistant material stands up to aluminum

Built to DIN 8051 B

JBO Thread Ring Gauge (NoGo) - Metric Fine - Left Hand - 6g - M39 x 1.5 S&E and quality teams confirm partsThe JBO Thread Ring Gauge (NoGo) Metric Fine, Left Hand, 6g, M39 x 1. 5 is a precision inspection tool designed to verify external thread diameters. Its ideal for manufacturers, machinists, and quality control teams who need fast, reliable checks to ensure parts meet exact thread specifications. Crafted from hardened steel for exceptional wear resistance, this NoGo gauge stands up to daily use in demanding workshops. Its precise dimensions make it