The JBO Thread Plug Gauge is a precision inspection tool designed for verifying UNEF threads in threaded holes. Specifically sized for right-hand threads in the 1 1/4 x 18 size and class 2B, this gauge helps quality teams in manufacturing, automotive, and aerospace confirm hole conformity quickly and reliably. Its go/no-go design provides an immediate, easy-to-interpret check, reducing guesswork and streamlining acceptance testing.

• Fast Go/No-Go verification: quickly determine if a threaded hole meets the exact UNEF 1 1/4 x 18, 2B specification, enabling rapid decisions without guesswork or additional tools.
• Precise UNEF sizing for right-hand threads: engineered to Unified thread standards, ensuring accurate fitment checks and consistent results across production runs.
• Rugged, user-friendly design: built with durable materials and a textured knurled surface for secure gripping and repeatable measurements in busy workshops.

Using this gauge helps you tighten quality control, shorten inspection cycles, and ensure every part that moves into assembly meets exact thread standards. Its clear go/no-go feedback minimizes rework, protects assembly fit, and supports reliable performance in demanding environments.