The JBO Thread Plug Gauge is a precision inspection tool designed to verify UNEF threaded holes with quick, reliable go/no-go checks. It helps manufacturing, automotive, and aerospace teams confirm that threads meet the required standards, reducing guesswork and speeding up quality assurance processes.

Designed for left-hand threads, this gauge matches a 3/8 x 32 UNEF size with a 2B class tolerance. Its rugged, knurled body provides a secure grip in busy shop environments, delivering repeatable results even after repeated use. Built to withstand everyday wear, it stays accurate through countless inspections on the production floor.

• Go/No-Go quick verification: Enables fast, decisive checks to distinguish conforming from non-conforming threads, accelerating inspection and reducing bottlenecks in assembly.
• Left-hand UNEF 3/8 x 32, 2B tolerance: Precisely matched to the specific thread standard, ensuring reliable fitment checks for left-hand applications without guesswork.
• Durable, ergonomic construction: Knurled handle and robust end sections provide comfortable handling and long-lasting performance in demanding environments.

Using the gauge helps you streamline your workflow, cut inspection time, and improve overall thread reliability. With clear go/no-go results, you can ensure proper engagement, reduce rework, and maintain consistent quality across parts and assemblies.