The JBO Thread Plug Gauge is a precision tool designed for metric fine threads, created to verify internal holes against the M36 x 1 specification. It’s an essential instrument for machinists, quality inspectors, and assembly technicians who need fast, confident Go/No-Go checks during setup, calibration, and inspection.

This right-hand gauge features an ergonomic knurled grip and robust hardened steel construction, delivering repeatable results in busy workshops. The 4H tolerance class ensures compatibility with standard metric threads, enabling reliable thread verification across components.

• Go/No-Go quick checks: Instantly determine whether the internal thread meets the M36 x 1 specification, reducing setup time and preventing misfits in assemblies.
• Hardened steel durability: Built to withstand daily use in demanding environments, delivering long life, consistent accuracy, and resistance to wear.
• Metric fine-thread compatibility (Right Hand, 4H): Precisely matched to standard right-hand M36 x 1 threads with 4H tolerance, ensuring reliable, repeatable hole verification across production runs.

Using this gauge, you’ll streamline quality control, cut downtime, and improve fit quality across your threaded assemblies, giving your team confidence in every measurement.