The JBO Thread Plug Gauge is a precision Go/No-Go tool for evaluating metric fine threads. Specifically designed for internal M15 x 1.5 threads with a 6G class and a right-hand orientation, it helps technicians, engineers, and hobbyists confirm hole tolerances quickly and confidently.

Its hardened steel construction delivers lasting performance in demanding workshop environments, resisting wear and maintaining accuracy through repeated use.

• Go/No-Go Quick Verification: Quickly confirm if the M15 x 1.5 internal thread matches tolerance with a simple pass/fail check, speeding up assembly and quality checks.
• Hardened Steel Durability: Built to withstand daily workshop use, resisting wear and maintaining sizing accuracy over many cycles.
• Ergonomic, Knurled Grip: Easy to handle with a secure grip in tight spaces, improving control and reducing user fatigue during inspection tasks.

By enabling fast, reliable hole verification, the JBO Thread Plug Gauge helps you streamline quality checks, reduce guesswork in your assembly process, and achieve consistent results across production and maintenance tasks. This means smoother workflows, fewer rework steps, and confidence that every M15 x 1.5 component will thread cleanly with mating parts.