The JBO Thread Plug Gauge is a precision inspection tool for verifying UNC threaded holes. Designed for engineers, machinists, quality inspectors, and technicians across manufacturing, automotive, and aerospace sectors, it helps confirm that holes meet Unified Thread Standard requirements. In a compact right‑hand 2B gauge sized No. 5 x 40, it delivers quick, reliable go/no-go checks that support proper fitment and repeatable results.

• Go/No-Go quick verification: Use the two ends to instantly confirm whether the hole is within tolerance—Go should thread in smoothly, No-Go should not—so inspectors can make fast pass/fail decisions on every part.
• UNC right-hand, 2B tolerance alignment: Specifically designed for UNC right-hand threads and 2B class tolerances, ensuring your gauges match standard thread specifications and deliver reliable results across parts.
• Rugged, easy-to-use design: Knurled body and smooth ends provide a comfortable grip and repeatable measurements in busy work environments, reducing user fatigue and downtime.

By integrating the JBO Thread Plug Gauge into your inspection routine, you gain faster, more confident thread verification that reduces assembly errors and rework. The go/no-go approach minimizes the need for more time-consuming measurements, helping you maintain steady production flow and consistent part quality. Built to withstand daily use in workshops and production lines, this gauge provides dependable performance when checking holes sized to No. 5 x 40 UNC threads.