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

this arbor offers dependable toolholding that minimizes vibration

Broad BT40 compatibility: Designed to securely clamp a wide range of milling cutters

helping you achieve consistent

so you can identify non-conforming parts at a glance and keep production moving

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