The JBO Thread Plug Gauge is a precision tool designed for metric coarse threads. It's ideal for engineers, machinists, inspectors, and workshops who need quick, dependable checks of threaded holes.

This right-hand plug gauge is sized for M2.5 x 0.45 with a 4H tolerance class and is crafted from hardened steel to endure daily use and deliver long-lasting accuracy.

• Go/No-Go Verification: Quickly confirm hole suitability—if the go gauge fits and the no-go gauge does not, the hole meets the standard; if not, it's rejected. This speeds up quality checks and minimizes guesswork.
• Metric Coarse Thread Compatibility: Designed for M2.5 x 0.45 coarse threads, ensuring consistent hole tolerance and reliable fits across assemblies.
• Hardened Steel Construction: Built to withstand repeated use in busy workshops, resisting wear and maintaining accuracy over time.

Using the JBO Thread Plug Gauge in your production or maintenance workflow speeds up inspection cycles, reduces rework, and helps ensure every threaded hole meets the required standard. The go/no-go approach provides clear pass/fail guidance, while the hardened steel build stands up to daily use, keeping measurements trustworthy for the long term.