The JBO Thread Plug Gauge is a precision inspection tool for verifying UNEF threaded holes. Designed for manufacturers, job shops, and maintenance teams across automotive, aerospace, and general machinery, it provides fast go/no-go checks to confirm proper thread engagement and conformance to the UNEF standard.

• Go-No-Go Design for Quick Checks: Instantly identify whether a thread hole is within spec by trying to thread the gauge, enabling fast, reliable pass/fail decisions and reducing inspection time.
• Durable, Easy-to-Handle Construction: Knurled body and simple handling allow precise measurements in busy workshops and when wearing gloves, helping maintain consistent readings with less effort.
• Precise UNEF 2B Right-Hand Thread Specification: Accurate 1 7/16 x 18 right-hand threads with 2B tolerance ensure consistent results across parts and long-term reliability in production environments.

This plug gauge supports streamlined quality control by delivering clear, repeatable results that improve workflow, cut downtime, and ensure that threaded components assemble correctly the first time.