JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6e - M39 x 1.5 FLH predictable range across parts and

predictable range across parts and production runs

Designed for machinists who demand clean finishes on aluminium and other non-ferrous metals

The left-hand spiral flute with right-hand cutting ensures efficient chip evacuation and smooth cutting for clean holes in a range of materials

A trusted choice for professional shops and serious hobbyists seeking dependable

improving rigidity and enabling access to hard‑to‑reach features

JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6e - M39 x 1.5 FLH predictable range across parts andThe JBO Thread Ring Gauge (NoGo) Metric Fine Right Hand 6e M39 x 1. 5 is a precision measurement tool designed to verify external thread diameters with reliability. Its ideal for machine shops, quality control teams, engineers, and technicians who need fast, accurate conformance checks against exact thread specifications. Crafted from hardened steel, this NoGo ring gauge delivers long lasting performance in demanding environments. Its durable