The JBO Thread Plug Gauge is a UNF Go-No/Go plug gauge designed for fast, reliable inspection of threaded holes and components. Built for right-hand UNF threads, it helps machinists, inspectors, and buyers verify that parts meet Unified thread standards quickly and consistently.

Its two-ended design, No. 1 x 72 size, and rugged knurled body deliver a durable, easy-to-handle tool for daily shop use. Color-coded ends aid quick identification of the go and no-go checks, enabling a simple pass/fail assessment to confirm proper fit and function.

• Go/No-Go quick verification: Quickly confirm whether threads meet the UNF Go and No-Go limits in a single check, speeding up inspections and reducing guesswork.
• 2B tolerance for standard compliance: Designed to match the common internal-thread tolerance class (2B), delivering consistent, reliable measurements across parts and assemblies.
• Ergonomic, two-ended, color-coded design: Rugged knurled body with distinct color bands on each end enables easy orientation for go/no-go checks and provides a sturdy grip for daily use.

Using this gauge improves workflow by delivering immediate, reliable results, reducing inspection time and rework, and supporting rigorous quality control across manufacturing, automotive, and aerospace environments. The right-hand UNF design and durable construction ensure compatibility with standard assemblies and dependable performance for everyday inspection tasks.