The JBO Thread Ring Gauge (NoGo) is a precision tool designed for quick, reliable verification of external metric coarse threads. This Left Hand gauge is configured for M2.5 x 0.45 threads with a 6g tolerance, making it ideal for quality control, inspection, and assembly in manufacturing, workshops, and DIY environments.

Use this NoGo gauge to confirm that threaded components meet the required standards, flagging non-conforming parts early in the process. Its user-friendly design supports accurate pass/fail checks, helping teams maintain consistent thread quality across jobs with minimal training.

• Precise NoGo verification for metric coarse threads: Quickly determine if external threads exceed the maximum size, reducing guesswork and ensuring consistent inspection results.
• Durable hardened steel construction: Built to withstand daily shop use, resisting wear and maintaining accuracy over time for long service life.
• Left-hand compatibility with M2.5 x 0.45 (6g): Specifically configured for left-hand, metric coarse threads, enabling reliable checks without swapping gauges or tools.

By incorporating the JBO Thread Ring Gauge (NoGo) into your quality workflow, you gain faster, more reliable thread verification, minimize rework, and support consistent fitment and performance across all left‑hand, metric coarse assemblies.