The JBO Thread Plug Gauge is a precision Go/No-Go tool designed for metric fine threads. Specifically built for right-hand M40 x 1.5 applications, it helps inspectors and machinists quickly verify that threaded holes will accept mating parts as intended. This gauge streamlines quality control by delivering a clear pass/fail result in seconds, reducing guesswork and speeding up setups.

• Go/No-Go inspection: Enables rapid pass/fail determinations for thread holes, speeding up inspections and minimizing downtime without sacrificing accuracy.
• Metric fine-thread compatibility: Precisely sized for M40 x 1.5 right-hand threads, ensuring reliable validation of critical mating interfaces and consistent results across production runs.
• Durable, easy-to-handle construction: Made from hardened steel with a knurled body for secure grip and long tool life, even in oily or workshop environments.

This gauge helps you confirm thread quality early in the assembly process, reducing rework and downtime while delivering dependable results. By providing consistent, quick checks, it supports faster setup, improved throughput, and confidence that components will assemble as designed—time after time.