The JBO Thread Ring Gauge (NoGo) – Metric Fine is a precision inspection tool designed to verify external thread diameters on fasteners and threaded components. It’s tailored for engineers, quality teams, machinists, and workshop professionals who need reliable, quick confirmation that parts meet exact thread standards without slowing production.

Built for durability in demanding environments, this NoGo gauge is crafted from hardened steel and finished to resist wear across daily use. It targets right-hand, metric fine threads with an M135 x 2 specification and a 6g tolerance, delivering stable, repeatable checks you can rely on in busy QA rooms, fabrication shops, and assembly lines.

• Fast go/no-go conformance checks: Quickly identify non-conforming external threads, reducing rework and ensuring only within-spec parts proceed to assembly or shipment.
• Hardened steel for long service life: Built to withstand repeated insertions and wear, maintaining accurate measurements and lowering replacement costs over time.
• Right-hand metric fine compatibility (M135 x 2): Optimized for common metric fine threads, ensuring seamless integration with standard QA workflows and production parts.

Using the JBO Thread Ring Gauge (NoGo) streamlines your quality process by delivering clear, decisive results that integrate with existing inspection procedures. Its robust construction supports consistent performance across shifts, helping you improve part fit, minimize downtime, and maintain traceable, reliable results in every project.