The JBO Thread Ring Gauge (NoGo) for metric coarse threads is a purpose-built inspection tool designed to quickly verify external thread diameters. It’s ideal for quality control, precision engineering, and maintenance environments, helping you confirm that threaded components meet specified limits before assembly or production proceeds.

Manufactured from hardened steel, the gauge delivers long service life in busy workshops. Its right-hand orientation and 6H tolerance for M9 x 1.25 coarse threads provide straightforward, reliable checks, so you can trust measurements and minimize rework.

• NoGo limit for maximum size control: Quickly identify oversize or non-conforming threads; a simple pass/fail check that speeds quality control and reduces downtime.
• Durable hardened steel construction: Built to resist wear and maintain accuracy in demanding environments, delivering reliable performance over many cycles.
• Metric coarse, right-hand compatibility (M9 x 1.25, 6H): Precisely matched to common coarse-thread fasteners, ensuring consistent inspection results and easy integration into existing QC workflows.

Use this gauge to streamline your inspection routine: it helps you detect non-conforming parts before they move to assembly, reduces scrap, and supports consistent, repeatable results across manufacturing, maintenance, and engineering projects.