The JBO Thread Plug Gauge is a precision inspection tool built for verifying trapezoidal threads in threaded holes. With right-hand orientation and a 7H tolerance in a Tr. 28 x 5 size, it provides quick, reliable go/no-go checks for parts used in manufacturing, automotive, and aerospace applications.

Used in quality control, it quickly confirms whether a hole conforms to Unified thread standards, helping prevent misfits and rework while supporting consistent assembly across lots.

• Go/No-Go Quick Verification: The go/no-go design lets you determine conforming versus non-conforming threads in seconds, speeding up inspections and reducing guesswork.
• Precise Trapezoidal Thread Calibration (7H, Tr. 28 x 5): Engineered to exact trapezoidal thread dimensions, ensuring reliable measurements and compliance with Unified thread standards.
• Durable, Ergonomic Knurled Grip: Knurled construction and robust materials provide secure handling and long life in busy workshop environments, delivering consistent results over many cycles.

This plug gauge streamlines your quality process by delivering fast, repeatable measurements that translate into smoother production flow and fewer threading issues. By ensuring holes meet the trapezoidal thread standard on the first check, you reduce rework, scrap, and downtime, while enabling reliable fastener fitment and longer-lasting assemblies. Rely on consistent, accurate results that support tighter tolerance control and improved overall performance.