The JBO Thread Ring Gauge (NoGo) – Metric Coarse, Left Hand, 6g, M2 x 0.4 is a precision inspection tool designed to quickly verify external threads on small components. Built for engineers, machinists, inspectors, and quality-conscious buyers, it provides a reliable go/no-go check that helps confirm parts meet their specified dimensions.

Made from hardened steel for durability and wear resistance, this gauge withstands daily use in busy workshops and QA labs, delivering consistent, repeatable results even in demanding environments.

• Durable hardened steel construction: Built to withstand daily use in busy shops, delivering long-lasting reliability and consistent measurements.
• Precise NoGo verification for metric coarse M2 x 0.4: Quickly checks external thread size to identify non-conforming parts and prevent incorrect assemblies.
• Left-hand thread compatibility (6g, M2 x 0.4): Specifically engineered for left-hand external threads, reducing mix-ups and ensuring accurate gauge results in specialized applications.

This gauge helps streamline quality control workflows by delivering clear pass/fail results, reducing inspection time, and preventing mismatched components. The combination of robust steel construction and precise sizing gives teams confidence that every measurement aligns with the required standards, supporting reliable assemblies and consistent performance across batches.