The JBO Thread Ring Gauge (NoGo) - Metric Coarse, Right Hand, 6h, M45 x 4.5 is a precision inspection tool designed to quickly verify external thread diameters against standard metric coarse threads. It’s ideal for engineers, machinists, quality control inspectors, and maintenance teams who need fast, reliable pass/fail checks to ensure correct fit and performance of threaded components.

Built from hardened steel for durability in demanding environments, this gauge resists wear and maintains accurate measurements through heavy use on the shop floor. Its NoGo design focuses attention on parts that exceed the specified tolerance, helping teams identify non-conforming components before assembly or shipment.

• Go/No-Go verification for external threads: Instantly confirm whether a part's thread diameter falls inside the allowed tolerance, speeding inspections and reducing guesswork.
• Rugged hardened steel construction: Built to withstand daily use on the shop floor, resisting wear and preserving measurement accuracy over time.
• Specifically calibrated for metric coarse threads (M45 x 4.5, 6h): Ensures reliable checks for standard right-hand coarse threads, delivering consistent readings across batches and minimizing rework.

Using the JBO Thread Ring Gauge helps you streamline quality control, reduce downtime, and ensure that every threaded connection meets the required standard for reliable fitment and performance.