The JBO Thread Plug Gauge is a precision tool designed for metric coarse threads, enabling fast, reliable verification of threaded holes. Ideal for machining shops, quality control teams, and assembly lines, it helps ensure components screw in cleanly and consistently.

This right-hand plug gauge covers M18 x 2.5 coarse threads and uses a Go/No-Go design to confirm both minimum and maximum sizes in a single check, reducing inspection time and rework while guarding against incorrect fits.

• Go/No-Go quick verification: Confirms acceptable thread size in a single pass, speeding up inspections and helping you avoid undersize or oversized holes.
• Durable hardened steel construction: Built to withstand daily workshop use, resisting wear and maintaining accuracy through many cycles.
• Right-hand M18 x 2.5 with 6H tolerance: Specifically tailored for metric coarse threads, ensuring reliable fit with common components and consistent results across production runs.

With this gauge, you’ll reduce downtime and rework by catching mismatched threads early, improve assembly reliability, and streamline QA workflows. The sturdy construction and precise Go/No-Go checks give you confidence that every hole will accept the intended fastener, delivering repeatable results across batches and over time.