The JBO Thread Plug Gauge is a precision Go/No-Go tool designed for metric coarse threads. Specifically configured for M9 x 1.25 coarse threads, this left-hand gauge streamlines hole inspection by delivering quick, clear pass/fail results to ensure components will thread correctly in assembly.

Crafted from hardened steel, the gauge is built to withstand repeated use in demanding workshop environments, delivering long-lasting performance and consistent accuracy over time.

• Go/No-Go Quick Validation: Enables fast, unambiguous checks of threaded holes, reducing inspection time and minimizing rework.
• Rugged Hardened Steel Construction: Withstands daily use in busy shops, maintaining accuracy and extending gauge life.
• M9 x 1.25 Left-Hand, 6H Ready: Specifically tuned for left-handed M9 x 1.25 coarse threads and compatible with 6H hole tolerances for reliable, repeatable results.

Incorporating this gauge into your quality control or manufacturing workflow helps you verify hole threads quickly, improve part-to-part consistency, and protect overall production quality without slowing down your process.