The JBO Thread Ring Gauge (NoGo) – Metric Fine, Right Hand, 6h, M20 x 0.75 is a precision inspection tool designed to verify external threads with accuracy and reliability. Built for engineers, machinists, quality inspectors, buyers, tradespeople, hobbyists, and technicians, it helps you quickly confirm that metric fine-thread components meet the required specifications.

Crafted from hardened steel, this gauge offers exceptional durability and wear resistance for long-lasting performance in demanding work environments. Its NoGo, right-hand design makes it easy to identify non-conforming threads during routine quality checks, supporting precise engineering, consistent results, and efficient inspection workflows.

• Metric Fine M20 x 0.75 compatibility: Precisely matches the metric fine thread standard for M20 x 0.75, enabling quick and reliable verification of external threads against spec sheets.
• Hardened steel construction: Built to endure daily use in busy shops, resisting wear and maintaining dimensional stability for repeatable inspections over time.
• User-friendly NoGo design: Enables fast identification of non-conforming threads, reducing guesswork and speeding up quality control and assembly readiness.

Whether used in incoming inspections, in-process QC, or field maintenance, the JBO NoGo Ring Gauge helps you confirm thread integrity quickly, improve consistency across parts, and protect the fit and function of threaded assemblies.