The JBO Thread Plug Gauge is a precision UNF Go-No/Go gauge designed to verify threaded holes quickly and reliably. It’s ideal for manufacturers, automotive shops, and aerospace QA teams that need fast, trustworthy checks on left-hand threads to ensure parts fit correctly and meet specifications.

This gauge is specifically built for left-hand threads and carries the No. 10 x 32 size with a 2B tolerance, providing a precise reference for parts that use these threads. Its go-no-go design delivers an immediate, clear signal on whether a hole is within tolerance, helping your team maintain consistent quality without slow, manual measurement.

• Go-No-Go quick verification: Instantly confirm whether a threaded hole conforms to UNF specifications, reducing inspection time and eliminating guesswork.
• Left-hand thread compatibility (No. 10 x 32, 2B): Precisely matched to common left-hand thread applications, ensuring correct gauge readings and reliable acceptance testing.
• Durable, repeatable construction: Robust materials and knurled grip provide long-lasting performance with consistent results across busy shop environments.

Using the JBO Thread Plug Gauge streamlines your quality workflow: inspectors gain clear pass/fail decisions, machinists can verify thread integrity during setup, and assemblies remain within specification across batches—reducing rework and improving overall manufacturing reliability.