The JBO Thread Ring Gauge (NoGo) — Metric Fine, Right Hand, 6h, M18 x 0.75 is a precision inspection tool designed to verify external thread diameters on fasteners, fittings, and machined parts. It’s suitable for engineers, machinists, quality inspectors, and shop personnel who need a fast, reliable pass/fail method to confirm parts meet exact thread specifications.

Crafted from hardened steel for durable performance, this NoGo gauge resists wear in busy environments and delivers long-lasting accuracy. Its straightforward design makes it easy to use for quick checks, helping you identify non-conforming threads early in the workflow and support consistent quality control across production runs.

• Go/NoGo quick-check for out-of-spec threads: Quickly determine whether external threads are within tolerance, speeding inspections and reducing guesswork on every part.
• Durable hardened steel construction: Built to withstand daily shop-floor use, offering excellent wear resistance and sustained measurement accuracy over time.
• Metric Fine, Right Hand, 6h, M18 x 0.75 designed: Engineered to match common metric fine-thread forms, providing consistent, repeatable measurements for components with M18 x 0.75 threads.

Together, these features help streamline quality control, shrink downtime, and improve the reliability of threaded assemblies. The gauge’s robust construction and precise dimensions give you confidence that every measurement is accurate, supporting compliance with standards and reducing rework across jobs and batches.