The JBO Thread Plug Gauge (GO) is a precision tool used to verify internal UNC threads in holes, helping manufacturers, automotive suppliers, aerospace shops, and shop floor technicians confirm hole quality. The no-go design helps quickly identify non-conforming threads, supporting proper fitment and reliable assembly.

Sized for a 2 1/2 x 4 profile with a right-hand thread and 2B tolerance, this GO gauge enables quick, repeatable GO checks that drive consistent part quality on the line.

• Precise UNC GO verification: Designed to accurately assess internal Unified Thread Standard (UNC) threads, providing clear pass/fail results to speed inspections and reduce guesswork.
• 2B tolerance for consistent results: Built to the 2B tolerance class, ensuring reliable measurements across components and minimizing variation in threaded hole checks.
• Ergonomic knurled body for easy handling: The textured, durable exterior helps you grip, insert, and remove the gauge quickly and repeatedly, even in tight or awkward spaces.

This gauge supports efficient quality control by delivering dependable, repeatable measurements for threaded holes. It helps ensure components thread correctly, reduces rework, and enhances overall manufacturing reliability across high-demand environments.