The JBO Thread Plug Gauge is a precise inspection tool designed for metric fine-thread holes. It is built for right-hand threads in the M25 x 1.5 size with a 6G tolerance, making it ideal for quality-critical assemblies where exact thread fit matters.

Crafted from hardened steel, this gauge delivers long-lasting performance with excellent wear resistance. Its Go/No-Go design allows quick, confident checks, helping you verify hole size and tolerance at a glance during setup or in-process inspection.

• Go/No-Go quick-check design: Quickly confirms hole tolerance by testing both the functional “Go” limit and the “No-Go” limit, speeding up inspections and reducing misfits.
• Hardened steel construction: Built to endure daily workshop use, resisting wear and maintaining accuracy after repeated insertions for reliable results.
• Metric fine-thread compatibility (M25 x 1.5), Right-Hand, 6G: Specifically tuned for common metric fine-thread holes, delivering consistent, repeatable checks for precise assemblies.

Using the JBO Thread Plug Gauge simplifies setup, reduces rework, and supports steady, predictable performance across parts and batches. It’s a robust, easy-to-use tool that strengthens your quality control workflow and gives you clear, actionable pass/fail results.