The JBO Thread Plug Gauge (NoGo) for metric coarse threads is a compact, hand-held inspection tool designed to verify threaded holes to exact size and tolerance. Specifically tuned for M60 x 5.5, right-hand threads with a 6H tolerance, this NoGo gauge helps ensure your components assemble correctly on the first try.

Made from hardened steel, the gauge is built to endure demanding shop conditions. Its knurled, ergonomic handle provides a secure grip, enabling quick, repeated checks with minimal fatigue for reliable quality assurance in high-volume environments.

• Go/No-Go verification for M60 x 5.5 right-hand threads: Quickly confirm hole size and tolerance to prevent misfits and rework, supporting consistent assembly quality.
• Hardened steel construction for long tool life: Resists wear and maintains measurement accuracy through hundreds of inspections in demanding environments.
• Ergonomic knurled handle and compact design: Easy to grip in tight spaces, enabling fast, repeatable checks with reduced hand fatigue.

This gauge helps streamline quality control, shorten inspection cycles, and ensure threaded connections conform to 6H tolerance and the intended size. By delivering reliable, repeatable measurements, it supports better parts interchangeability, fewer defects, and smoother downstream assembly across manufacturing, maintenance, and engineering workflows.