The JBO Thread Plug Gauge is a precision tool designed to inspect metric fine-threaded holes, specifically M25 x 1.5 with a 6H tolerance, in a right-hand orientation. It’s ideal for engineers, machinists, quality inspectors, and assembly teams that rely on exact fits for reliable performance. The Go/No-Go design provides quick, clear pass/fail feedback to confirm whether a hole will accept the mating part.

With a simple, intuitive use in mind, this gauge helps you verify hole threads at a glance—reducing guesswork and downtime. Built from hardened steel and finished for durability, it resists wear in busy workshop environments, while the knurled body ensures a secure grip even when wearing gloves.

• Go/No-Go quick checks: Delivers immediate pass/fail feedback on hole threads, speeding up setup, QA checks, and ensuring consistent mating in production.
• Metric fine-thread accuracy (M25 x 1.5, 6H): Precisely sized for ISO metric fine threads, helping prevent misfits and ensuring reliable, repeatable results across parts.
• Durable, wear-resistant build with ergonomic grip: Hardened steel construction stands up to daily shop use, while the knurled body provides a secure, comfortable grip for precise measurement even in demanding conditions.

Using the JBO Thread Plug Gauge integrates seamlessly into your inspection routine, speeding up hole verification, reducing rework, and delivering dependable results that help you meet tight tolerances with confidence.