The JBO Thread Plug Gauge is a precision tool designed to quickly verify UNEF right-hand threaded holes at size 9/16 x 24 with a 2B class. It’s ideal for manufacturers, machinists, quality inspectors, and maintenance teams across automotive, aerospace, and general engineering applications. The Go-No/Go design provides a fast, clear indication of whether a hole is within spec, helping ensure proper fastener fit and reliable performance in assemblies.

It features a dual-ended design that clearly differentiates Go and No-Go checks, so you can test both the minimum and maximum limits with a single, compact instrument. The tool’s precision machining ensures consistent readings, while the knurled body offers a secure, comfortable grip for repeated use in busy work cycles.

• Go/No-Go Quick Verification: The Go end confirms acceptance when the hole is within tolerance, and the No-Go end flags non-conforming threads, enabling rapid pass/fail decisions and reducing inspection time.
• Dual-Ended UNEF 9/16 x 24 Right-Hand Testing: Specifically engineered for UNEF threads in the 9/16 x 24 size with right-hand orientation, this gauge streamlines conformity checks to 2B class standards.
• Durable, Ergonomic Construction: Knurled body and robust construction provide slip-free handling, long service life, and reliable performance in demanding shop environments.

Using this gauge helps you accelerate quality control, minimize rework, and maintain consistent thread integrity across parts and assemblies. With clear Go/No-Go feedback, you’ll improve fixture readiness, speed up assembly workflows, and deliver reliable results to customers and internal stakeholders alike.