The JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads, ideal for applications where exact hole size matters. It helps engineers, machinists, and quality-control professionals quickly verify threaded holes for proper fit, ensuring components assemble without guesswork.

Specifically built for Right Hand threads with an M12 x 0.5 size and 6H tolerance, the gauge uses a hardened steel body for long-lasting performance in busy workshops and production environments.

• Go/No-Go Design for Quick Pass/Fail Checks: Gain rapid visibility into hole size with simple pass/fail results, reducing inspection time and downstream rework.
• Hardened Steel Construction for Longevity: The tool resists wear and maintains dimensional accuracy through frequent use, providing dependable results over thousands of checks.
• M12 x 0.5 Fine Thread, Right-Hand, 6H Compatibility: Engineered to match metric fine-thread holes exactly, ensuring consistent checks with your existing parts and QA protocols.

Using the JBO Thread Plug Gauge helps streamline QA workflows, speeds up part acceptance, and supports consistent, reliable assemblies. By delivering clear go/no-go results on every hole, it reduces downtime, minimizes waste, and gives you confidence that your threaded connections meet specification every time.