The JBO Thread Ring Gauge (NoGo) is a precision tool designed to verify external metric coarse threads. Built for right-hand threads and calibrated for M3 x 0.5 with a 4h tolerance, it delivers quick, reliable checks to confirm parts meet specifications before assembly.

Ideal for quality control, manufacturing, and maintenance teams, this NoGo gauge helps inspectors identify non-conforming components early, reducing rework and ensuring reliable fit and performance in threaded connections.

• Fast, clear Go/No-Go verification: Delivers a straightforward pass/fail indication for metric coarse threads, speeding up inspections and minimizing guesswork.
• Durable hardened steel construction: Withstanding daily use in demanding environments, it maintains accuracy and longevity for years of reliable service.
• Metric coarse compatibility (Right Hand, M3 x 0.5, 4h): Precisely sized for common metric coarse threads and correct orientation, helping you avoid setup mistakes and ensure consistent results.

Using the gauge supports efficient quality control workflows, reduces downtime from misfits, and helps you consistently achieve proper thread engagement. Its reliability gives you confidence in every measurement, enabling smoother production, easier maintenance, and higher overall quality in threaded assemblies.