The JBO Thread Ring Gauge (NoGo) is a precision inspection tool designed to verify external metric threads. Specifically tuned for metric fine threads, it checks M39 x 2 with a 6H tolerance and right-hand orientation, helping quality teams, machinists, and assembly technicians quickly determine whether a part meets specification.

Built from hardened steel for durability, this gauge delivers reliable performance in busy workshops. The clearly defined NoGo limit lets operators identify non-conforming components at a glance, supporting consistent inspections and reducing rework.

• NoGo verification for metric fine M39 x 2 threads: Provides quick go/no-go checks to confirm external thread diameter stays within the 6H tolerance, speeding inspections and reducing guesswork.
• Hardened steel construction for durability: Withstands daily use in busy shop environments while maintaining dimensional stability for long service life.
• Right-hand threading with clear identification: Ensures compatibility with standard assemblies and minimizes setup errors with unambiguous orientation and NoGo marking.

Using the JBO Thread Ring Gauge (NoGo) streamlines quality control by delivering fast, reliable conformance checks. It helps you maintain consistent thread dimensions across parts, cut inspection time, and improve overall manufacturing throughput, from initial prototyping to high-volume production.