The JBO Thread Plug Gauge is a UNF Go/No-Go plug gauge designed to verify internal threads in holes and components. Sized for right-hand UNF threads at 9/16 x 18 with a 2B tolerance class, it enables fast, reliable pass/fail checks during quality control and assembly.

Designed for professionals across manufacturing, automotive, and aerospace environments, this gauge helps ensure parts meet UNF specifications and fit consistently in assemblies. The Go/No-Go design makes it quick to identify conforming and non-conforming threads, reducing downtime and rework while supporting dependable performance in critical applications.

• Go/No-Go Quick Check: The design lets you quickly confirm whether threads meet spec, speeding up inspection without sacrificing accuracy.
• Exact UNF Right-Hand 9/16 x 18, 2B Size: Precisely sized to verify thread holes against the standard, helping ensure consistent fits across parts.
• Reliable, Reproducible Results: Tight tolerances and precise construction deliver consistent measurements across multiple parts and inspections.

With the JBO Thread Plug Gauge, you streamline threaded-hole inspections, reduce guesswork, and improve overall quality. The fast, repeatable Go/No-Go checks support tighter process control, quicker setup for new parts, and more confident assemblies in your shop or production line.