The JBO Thread Ring Gauge (NoGo) is a precision tool designed for engineers, inspectors, and machinists to verify external thread diameters on threaded components. This Metric Fine NoGo gauge is tailored for right-hand threads and is specified for M145 x 4 with a 6g tolerance, helping you confirm parts meet exact standards during manufacturing and quality control workflows.

Built from hardened steel, this ring gauge delivers long-lasting performance in demanding environments. It resists wear and maintains dimensional stability over many inspection cycles, while its straightforward, easy-to-use design helps operators quickly identify parts that do not conform to specification, supporting consistent quality across production lines.

• Precise metric fine threading (M145 x 4, 6g) NoGo gauge: Delivers strict pass/fail checks for external thread diameter, helping you identify non-conforming parts quickly and with confidence.
• Hardened steel construction for durability: Resists wear and maintains dimensional accuracy, ensuring reliable performance in busy workshops and QA labs over time.
• Right-hand threading compatibility: Designed to suit standard right-handed threads, simplifying setup and reducing handling errors in everyday inspection tasks.

This gauge supports faster, more reliable quality control by providing a clear, repeatable method to verify external thread dimensions. It helps you minimize rework, improve assembly fit, and maintain consistent results across your manufacturing process, giving you the confidence to approve parts that meet exacting metric fine specifications.