The JBO Thread Plug Gauge (GO) – Metric Fine, Left Hand, 6H, M72 x 2 is a precision go gauge used to quickly verify that threaded holes meet exact metric specifications. Designed for engineers, machinists, quality inspectors and assembly technicians, it provides a clear pass/fail indication to confirm hole size is correct before parts move to the next stage.
Made from hardened steel, this GO gauge is built to endure repeated use in demanding environments. The left-hand design covers left-hand threaded applications, while the knurled exterior gives you a secure grip for accurate, repeatable checks even when hands are wet or wearing gloves.

• Metric Fine GO gauge for M72 x 2 (6H): Verifies that a threaded hole accepts the plug gauge to exact size and tolerance, enabling fast, reliable go/no-go checks and reducing rework.
• Hardened steel construction: Delivers long-lasting durability and maintains measurement accuracy through heavy use and routine inspection cycles.
• Ergonomic, knurled design for secure handling: Provides a confident grip and quick alignment in busy workshops, even with oily hands or gloves, helping you speed up setup and improve consistency.

With the JBO Thread Plug Gauge, you’ll streamline quality control, shorten inspection times, and ensure consistent hole quality across parts and batches. It’s a reliable, repeatable tool that supports precise assembly, better uptime, and predictable performance in machining, manufacturing, and maintenance environments.