The JBO Thread Plug Gauge - UNJC Go-No/Go is a precision inspection tool designed to verify threaded holes against Unified thread standards. Built for demanding environments across manufacturing, automotive, and aerospace, it helps inspectors quickly determine whether a thread hole meets spec, promoting reliable fit and consistent performance.

Sized for right-hand threads in 5/16 x 18, 3B class, this plug gauge enables fast Go/No-Go validation of holes. The result is faster, repeatable checks and fewer disruptions in production and assembly.

• Go/No-Go quick determination: Instantly identify conforming versus non-conforming threads, speeding up quality checks and reducing downtime.
• Rugged, knurled construction: Durable metal body with a textured grip provides secure handling and long service in daily shop use.
• Precise UNJC sizing: Specifically matched to UNJC Go-No/Go for right-hand 5/16 x 18, 3B, delivering repeatable, accurate results across parts and assemblies.

This gauge helps you streamline incoming inspection and in-process QA, delivering consistent thread acceptance and fewer misfits. By providing a clear pass/fail indication, it supports faster assembly, reliable performance in critical applications, and increased confidence across manufacturing, automotive, and aerospace workflows.