The JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads. It’s ideal for machinists, quality inspectors, and manufacturing teams who need fast, reliable checks of threaded holes to ensure proper fit and reliable assembly. This Go/No-Go gauge helps you confirm that holes meet exact specifications without guesswork, keeping production moving smoothly.

• Go/No-Go quick verification: Quickly confirm hole thread acceptance and rejection limits with a simple test, reducing inspection time and improving consistency across parts.
• Rugged hardened steel construction: Built to withstand daily use in busy workshops, resisting wear and maintaining accurate dimensions for long-lasting performance.
• Left-hand, metric fine thread compatibility: Precisely engineered for M35 x 1 left-hand internal threads with 6H tolerance, ensuring reliable fits and repeatable results for this specific thread form.

This gauge helps streamline quality control and assembly workflows by delivering dependable, repeatable checks. Its robust build and targeted metric fine-thread calibration mean fewer reworks and tighter process control, so you can trust your parts will thread together correctly the first time.