The JBO Thread Ring Gauge GO, Metric Fine, Right Hand, 6e, M4 x 0.5 is a precision inspection tool designed to verify external thread diameters and ensure conformance across manufacturing, assembly, and quality control processes. It’s ideal for engineers, buyers, tradespeople, hobbyists, and technicians who need reliable, quick checks of metric fine threads.

Crafted from hardened steel, this GO ring gauge delivers durable, wear‑resistant performance in demanding workshop environments. Its precise dimensions support consistent, repeatable inspections of threaded components, helping you maintain standards and reduce rework over the long term.

• Go gauge for metric fine external threads: Quickly verify that an M4 x 0.5 right‑hand thread matches the GO standard, enabling fast, confident size checks before assembly.
• Hardened steel construction for durability: Built to resist wear and provide long service life in busy shops, sustaining accuracy through heavy use.
• Designed for fast, user‑friendly inspections: Simple engagement and clear conformance indication streamline quality checks and minimize downtime.

In everyday use, the JBO Thread Ring Gauge GO supports reliable, repeatable measurements that align with required standards and specifications, helping you improve workflow, speed up inspections, and deliver consistently accurate threaded parts.