The JBO Thread Plug Gauge (GO) is a precision measuring tool designed to quickly validate threaded holes for metric fine specifications. Crafted for M56 x 2 threads with a right-hand orientation and 4H tolerance, this GO gauge supports machinists, inspectors, and assembly teams in delivering reliable, fast acceptance checks. Made from hardened steel for exceptional wear resistance, it stands up to demanding work environments and repeated use.

• Precise GO verification for M56 x 2 (4H): Quickly determine if a threaded hole meets the metric fine standard; its GO engagement provides clear, tactile feedback to support fast, confident go/no-go decisions.
• Hardened steel construction for long life: Built to endure daily use in busy workshops, resisting wear and maintaining accuracy over thousands of inspections.
• Ergonomic, knurled grip with right-hand orientation: Easy to handle and align in tight holes, reducing setup time and improving repeatability across operators.

Using the JBO Thread Plug Gauge (GO) helps you streamline quality control, minimize misfits, and shorten inspection cycles. Its durable build and clear pass/fail feedback support consistent results across shifts, boosting productivity and confidence in every threaded assembly.