The JBO Thread Plug Gauge is a precision go/no-go gauge designed for UNEF threads, built to verify threaded holes and components quickly and reliably. Its dual-ended design makes it ideal for production floors, repair shops, and quality labs where fast, confident pass/fail decisions are essential.

• Dual-ended Go/No-Go design: Enables immediate pass/fail checks on 7/8 x 20 UNEF right-hand threads, helping you approve good parts fast and flag non-conformities before they move to assembly.
• Exact UNEF 7/8 x 20, 2B specification: Precisely matches the target thread size and class, delivering consistent measurements that align with standard practice across manufacturing, automotive, and aerospace applications.
• Rugged, user-friendly construction: Knurled body and color-coded ends provide a secure grip and quick end identification, supporting durable, repeatable use in busy workshop environments.

Designed to streamline thread inspection, the JBO Thread Plug Gauge helps you reduce downtime, improve first-pass quality, and maintain reliable fit across parts and assemblies. Its dependable construction and straightforward go/no-go indicators give technicians and buyers the confidence to move parts through quality checks with clarity and speed.