Precision you can rely on for external threads—the JBO Thread Ring Gauge (GO) for Metric Coarse, Right Hand, 6h, M3 x 0.5 is a dedicated go/no-go tool designed for quality control, machining, and assembly workflows. It helps inspectors quickly verify that M3 x 0.5 metric coarse threads conform to specification and will mate reliably with matching internal threads.

Crafted from hardened steel for durability and wear resistance, this GO gauge maintains calibration through daily use in busy workshops. The smooth finish and knurled edge make it easy to handle, even with gloves, and the gauge is built to deliver consistent results across many checks.

• Go gauge for M3 x 0.5 metric coarse threads: Provides a fast, pass/fail check of external thread size and pitch, enabling quick decisions and reducing rework in mating assemblies.
• Hardened steel construction: Delivers excellent wear resistance and stable dimensions over time, so your gauges stay accurate through heavy-use QC environments.
• Ergonomic, easy-handling design: Knurled outer surface and straightforward seating allow reliable checks in busy shops, even while wearing gloves or handling multiple parts.

The GO gauge streamlines your inspection workflow by delivering repeatable results, helping you prevent out-of-tolerance components from entering assemblies, and supporting tighter quality control across production lines. With its durable build and precise sizing, you can trust this gauge to deliver consistent, dependable performance for metric coarse M3 x 0.5 threaded connections.