The JBO Thread Plug Gauge is a Go/No-Go gauge designed for inspecting BSW (British Standard Whitworth) thread holes. In a right-hand, medium-class 1/2 x 12 configuration, it provides fast, reliable checks that help manufacturing, automotive, and aerospace teams verify thread compatibility before assembly.

Its simple go/no-go design gives an immediate pass/fail verdict, reducing inspection time and guarding against mismatched parts.

• Go/No-Go quick verification: Enables immediate pass/fail assessment of the thread hole, streamlining quality checks and preventing incorrect fittings.
• BSW thread compatibility: Precisely aligns with British Standard Whitworth threads for right-hand orientation and medium class tolerances, delivering consistent, trustworthy results.
• Durable, ergonomic construction: Built with robust metal components and a knurled grip for secure, comfortable use in busy workshop environments, ensuring long service life.

The JBO Thread Plug Gauge helps you tighten quality control across your workflow. By delivering clear, reproducible results, it reduces rework, protects downstream assembly, and supports reliable performance of threaded components in demanding applications.