The JBO Thread Plug Gauge is a precision tool designed to verify internal metric fine threads. Specifically tuned for M9 x 0.5 and 6H tolerance, this right-hand Go/No-Go gauge helps ensure threaded holes accept genuine parts without guesswork. It’s ideal for quality control, machining setups, and assembly workflows where consistent thread engagement is essential.

• Go/No-Go design for fast, confident checks: Quickly confirm whether the internal M9 x 0.5 threads meet spec, enabling fault‑free assemblies with minimal downtime.
• Hardened steel construction for durability: Built to resist wear and maintain accurate measurements through repeated use in demanding workshop environments.
• Right-hand metric fine-thread compatibility: Precisely calibrated for M9 x 0.5 threads with 6H tolerance, delivering reliable, repeatable checks for standard internal threads.

Using this gauge simplifies inspection routines, reduces guesswork during assembly, and helps you maintain tight tolerances across production runs. The combination of robust materials, precise calibration, and a Go/No-Go inspection approach delivers consistent results, minimizes rework, and supports smoother, more efficient manufacturing and maintenance processes.