The JBO Thread Plug Gauge (NoGo) – Metric Fine, Right Hand, 6H, M140 x 2 is a precision measuring tool designed for inspecting internal metric fine threads. This NoGo gauge helps ensure threaded holes meet exact size and tolerance specifications, supporting consistent assembly and quality across manufacturing, maintenance, and repair tasks. It’s ideal for technicians, inspectors, and machinists who need fast, reliable checks in automotive, aerospace, and general machining environments.

Manufactured from hardened steel for durability and wear resistance, the gauge is built to deliver long-lasting performance in busy workshops. The knurled body provides a secure, comfortable grip for quick handling, even with gloves on, helping inspectors keep pace with high-frequency checks.

• Metric Fine NoGo verification: Enables fast pass/fail assessment for internal M140 x 2 threads (6H), confirming holes are within tolerance without trial threading.
• Hardened steel, long-life construction: Delivers durable, wear-resistant performance that maintains accuracy through heavy use.
• Ergonomic, secure grip: Knurled design and compact form allow quick, confident checks and reduced operator fatigue, even in demanding work environments.

This gauge supports reliable quality control by providing clear, repeatable measurements that help you prevent misfits and minimize rework. By streamlining inspection workflows, it contributes to faster throughput, consistent results, and greater confidence in every threaded-hole assessment.