The JBO Thread Plug Gauge is a precision internal-thread gauge built for fast, reliable hole inspections. Sized for UNEF 1/2 x 28 threads and 2B tolerance, this Go-No-Go gauge helps technicians quickly verify that threaded holes meet specification without guesswork, making setup and quality control more efficient.

• Fast Go/No-Go verification: Two ends deliver instant acceptance or rejection for each hole, dramatically reducing inspection time and minimizing rework.
• Precise UNEF 1/2 x 28 right-hand, 2B tolerance: Specifically matched to the internal thread size and tolerance class you specify, ensuring consistent, repeatable checks across lots.
• Durable, ergonomic construction: Knurled grip and robust ends provide secure handling in busy shops, while clean threading ensures smooth insertion into holes for accurate readings.

With the JBO Thread Plug Gauge, your team gains faster setup, fewer threading errors, and more reliable assembly across parts and programs. Its straightforward go/no-go feedback helps operators quickly decide on next steps, improving workflow, reducing downtime, and delivering consistent results in quality control processes.