The JBO Thread Ring Gauge (NoGo) – Metric Fine, Right Hand, 6h, M18 x 1 – is a precision inspection tool designed to verify the maximum permissible size of external threads on fasteners and precision components. It’s ideal for quality control teams, machinists, and engineers who need quick, reliable checks to confirm parts meet exacting specifications.

Built to endure busy workshop environments, this hardened-steel ring gauge delivers consistent results across shifts. Its NoGo design makes it easy to identify non-conforming threads at a glance, helping you maintain tight tolerances and reduce rework.

• Accurate NoGo verification: Quickly confirms external metric fine threads (M18 x 1, 6H) meet the maximum size spec, enabling fast, reliable pass/fail inspections.
• Durable hardened steel construction: Designed to resist wear, corrosion, and frequent handling, delivering long service life in demanding environments.
• User-friendly, ergonomic design: Right-hand orientation with a knurled outer edge provides secure grip and straightforward alignment during testing, reducing setup time.

With the JBO Thread Ring Gauge, you gain a dependable, time-saving tool that streamlines quality checks, improves first-pass yields, and minimizes the risk of incorrect thread fits in assemblies. Its robust construction and clear, rapid feedback support consistent performance across production runs, giving engineers, buyers, and shop-floor teams confidence in every measurement.