The JBO UNEF Go-No-Go Thread Plug Gauge is a precision inspection tool designed to verify internal threads in holes that use UNEF 1 3/8 x 18 right-hand threads. Built for reliability in manufacturing, automotive, and aerospace environments, it helps ensure threaded components meet exact specifications with fast, clear results. The go-no-go design lets you quickly confirm whether a hole is within tolerance, reducing guesswork and rework in QA and assembly.

Use this gauge in incoming inspections, in-process quality checks, and final assembly to validate thread fit without disassembly. Its straightforward go/no-go feedback provides an at-a-glance pass or fail, helping teams maintain consistent quality and keep production moving smoothly.

• Go/No-Go quick verification: Instantly determine whether a hole meets minimum and maximum thread tolerances with clearly labeled ends, speeding up inspections and reducing guesswork.
• Precise UNEF 1 3/8 x 18, Right-Hand, 2B: Engineered to the Class 2B tolerance for repeatable checks across production runs, supporting reliable, consistent thread validation.
• Ergonomic, durable build with color-coded ends: Knurled metal body offers a secure grip in busy workspaces, with color-coded end collars for easy orientation of GO and NO-GO ends.

Using the JBO Thread Plug Gauge helps you tighten quality control, speed up setup and inspection times, and ensure every hole mates correctly with mating parts. It supports faster throughput, lower scrap, and more dependable performance across manufacturing, automotive, and aerospace applications.