JBO Thread Plug Gauge is a precision inspection tool designed to verify internal metric fine-thread holes. Specifically configured for left-hand M22 x 2 threads with a 6G tolerance, this Go/No-Go gauge enables quick, reliable checks to confirm that mating parts will thread in smoothly and seal correctly during production, maintenance, or assembly.

• Go/No-Go quick verification: Quickly determine if a hole is within spec—easy to use in busy work zones and helps flag out-of-tolerance parts before they cause downtime or misfits.
• Hardened steel construction: Built to endure daily workshop use, delivering long-lasting performance and resistance to wear so it remains accurate over many cycles.
• Precisely matched for left-hand metric fine threads: Specifically sized for left-hand M22 x 2 threads (6G), ensuring reliable testing of the exact thread form used in your assemblies.

Using this gauge streamlines quality checks, reduces rework, and supports consistent thread fits across parts and assemblies. It gives you confidence in your measurements, speeds up inspection routines, and helps maintain high standards of accuracy in every shift.