The JBO Thread Plug Gauge (NoGo) in Metric Fine is a precision inspection tool designed for metric fine threads. It’s ideal for machine shops, maintenance teams, and quality-control processes that need reliable confirmation of threaded hole size and tolerance. This NoGo gauge works alongside Go gauges to help you quickly determine whether a hole meets exact specs, reducing guesswork and rework.

Constructed for durability, the gauge features a hardened steel body and a knurled surface for confident handling in busy work environments. Its robust design is built to withstand daily use, delivering consistent measurements over time.

• Hardened steel construction: delivers long-lasting performance and wear resistance in demanding workshop conditions, reducing the need for frequent replacements.
• Precise metric fine sizing (M125 x 3, 6H, Right Hand, NoGo): ensures reliable hole verification with the exact thread specification you need for quality control and standardization.
• Ergonomic knurled grip: provides secure, comfortable handling and easy insertion/removal, speeding up inspections and improving repeatability.

Used as part of a targeted inspection process, the JBO Metric Fine NoGo plug gauge helps you confirm hole acceptance quickly, cut downtime, and maintain consistent results across parts and batches—giving you confidence in every measurement and every build.