The JBO Thread Ring Gauge (NoGo) is a precision tool designed to verify external thread diameters on components with M12 x 1 threads. Sized for metric fine threads and configured for right-hand use, it's ideal for engineers, machinists, inspectors, and buyers who need fast, reliable confirmations that parts meet specification.

Crafted from hardened steel for durability, this gauge resists wear in busy workshops and maintains stable measurements over time. Its NoGo design makes it easy to spot non-conforming threads at a glance, supporting efficient quality control and precise engineering decisions.

• NoGo Quick-Quality Checks: Designed to clearly show out-of-spec threads, speeding up inspections and reducing guesswork during QC audits.
• M12 x 1 Metric Fine Precision: Tight manufacturing tolerances ensure consistent diameter verification for the common M12 x 1 thread size.
• Rugged Hardened Steel Durability: Built to withstand daily workshop wear, delivering long service life and stable measurements in demanding environments.

Using the JBO Thread Ring Gauge helps you streamline quality control, cut downtime, and improve confidence in every assembly. Its durable build and precise design deliver repeatable results, ensuring your threaded parts meet specifications every time and reducing the risk of rework or field failures.