The JBO Thread Ring Gauge (GO) – Metric Coarse is a precision inspection tool designed to verify external threads on mating parts. Specifically tailored for M3 x 0.5 coarse threads with a right-hand orientation and 6g tolerance, it helps engineers, machinists, and quality teams quickly confirm that parts meet the required minimum size for reliable fit and performance. Built for everyday workshop use, this GO gauge delivers consistent results across production runs.

• GO gauge for Metric Coarse M3 x 0.5 (6g, Right Hand): Provides precise Go checks of external thread diameters to verify parts meet the essential minimum size, supporting accurate fitment and reducing rework.
• Hardened steel construction: Built to resist wear and retain accuracy through daily use, ensuring long service life and stable measurements in busy environments.
• Ergonomic, easy-to-use design: Features a knurled exterior for secure grip and smooth insertion, enabling fast, repeatable inspections with minimal operator effort.

This gauge helps streamline quality control and precision assembly by delivering clear, dependable measurements that you can trust across batches. Its durable build and straightforward handling support consistent results, minimize downtime, and give your team confidence in every threaded connection.