The JBO Thread Ring Gauge (NoGo) is a precision tool for quick, reliable inspection of external metric coarse threads. Sized for M45 x 4.5 with a right-hand thread, it helps machinists, inspectors, and quality teams confirm that components meet the specified maximum thread diameter.

Manufactured from hardened steel for durability, this NoGo gauge is built to withstand daily use in demanding environments, delivering long service life and stable accuracy. It supports quality control, precision engineering, and consistent fitment of metric coarse threaded connections.

• Durable hardened steel construction: Built to withstand daily inspection tasks in busy workshops, delivering long-lasting performance and reduced replacement costs.
• Exact metric coarse sizing (M45 x 4.5, right-hand): Provides a reliable pass/fail signal for components that must meet the maximum thread diameter, speeding up quality checks and reducing guesswork.
• Fast, confident non-conforming part detection: The NoGo design makes it obvious when a part exceeds the maximum diameter, helping inspectors make quick, reliable decisions and keep production moving.

Using the JBO Thread Ring Gauge streamlines your quality workflow by delivering consistent, repeatable results. It helps reduce rework, shorten inspection times, and improve overall reliability of threaded assemblies in everyday manufacturing, assembly, and maintenance tasks.