The JBO Thread Plug Gauge (NoGo) – Metric Fine is a precision measuring tool designed for metric fine threads. It provides fast, reliable NoGo checks for threaded holes sized M64 x 4 with a right-hand orientation and 6H tolerance, helping inspectors confirm parts meet exact specifications. Made from hardened steel, it delivers durability and long-lasting performance in demanding shop environments.

• NoGo verification for metric fine threads: Quickly confirm that threaded holes do not exceed the NoGo limit, enabling fast pass/fail decisions and reducing rework.
• Durable hardened steel construction: Built to resist wear and maintain precise dimensions for long service life in busy workshops.
• Ergonomic knurled grip and compact design: Easy to handle, control placement, and deliver repeatable measurements even in tight spaces.

This gauge helps you streamline quality checks, shorten inspection cycles, and deliver consistent, reliable results across production runs. With its durable construction and precise metric fine dimensions, it supports better process control, fewer rejects, and increased confidence in every threaded-hole inspection.