The JBO Thread Plug Gauge is a precision tool designed for metric fine threads, built to help engineers, machinists, and inspectors verify hole compatibility with confidence. It’s ideal for workholding, mating parts, and production settings where exact thread engagement matters, including applications using M25 x 2 threads (4H tolerance). The Go/No-Go design enables fast, direct checks so you can move projects forward without guesswork.

• Go/No-Go design for fast acceptance checks: Quickly confirm whether a threaded hole meets specification, reducing inspection time and minimizing setup guesswork.
• Durable hardened steel construction: Built to withstand daily use in busy workshops, delivering long-lasting performance and consistent measurements.
• Right Hand, 4H tolerance for reliable fits: Configured for right-hand threads with 4H tolerance to ensure dependable, repeatable mating in production and repair tasks.

Using this plug gauge helps streamline assembly, cut downtime, and improve accuracy across parts and teams. Its rugged construction supports sustained accuracy, so you can trust it to deliver repeatable results project after project.