The JBO Thread Ring Gauge (GO) – Metric Coarse is a precision inspection tool designed to verify external threads on metric components. It is specifically engineered for right-hand M18 x 2.5 coarse threads, enabling quick go/no-go checks to confirm parts meet the intended size and thread class.

Manufactured from hardened steel, this GO gauge delivers exceptional durability and wear resistance for demanding shop environments. Its user-friendly design and precise measurements support reliable inspections and proper fitment of metric coarse threaded connections according to industry standards.

• Accurate GO checks for metric coarse threads: Precisely machined to quickly verify external thread diameters against M18 x 2.5 coarse-thread standards, enabling fast approval decisions and reduced inspection time.
• Durable hardened steel construction: Built to withstand regular use in busy workshops, delivering long tool life and consistent performance with minimal wear.
• Right-hand, 6g tolerance for reliable fit: Ensures proper engagement and consistent results with standard metric coarse threaded connections, reducing misfits and rework.

Using the JBO GO gauge in your inspection process helps you confirm thread accuracy fast, reduce rework, and maintain consistent assembly quality. With its precise sizing and rugged construction, you can trust that metric coarse threaded connections will fit as intended, improving workflow efficiency and final part performance.