The JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads. It is ideal for engineers, inspectors, machinists, buyers, and hobbyists who need fast, reliable verification of threaded holes. With a Go/No-Go design, you can instantly determine whether a hole meets the required size and fit, helping you avoid misfits in assemblies.

• Go/No-Go quick checks: Instantly confirm hole acceptance with a simple pass/fail indication, speeding up inspections and reducing the need for multiple measurements.
• Metric fine-thread accuracy (M36 x 1): Specifically calibrated for metric fine threads, providing clear, consistent checks for precise hole sizing and reliable mating with components.
• Left-Hand compatibility with hardened steel: Designed for left-hand threads and built from hardened steel for durability, delivering long-lasting performance in demanding workshop environments.

This gauge supports efficient quality control in a range of settings, from precision instrumentation to general manufacturing. The combination of a targeted metric fine-thread specification, Go/No-Go usability, and a rugged, wear-resistant body helps you speed up checks, improve first-pass assembly results, and extend tool life. Rely on it for consistent performance when verifying M36 x 1 holes, whether you’re setting up equipment, performing routine maintenance, or validating parts for production.