The JBO Thread Plug Gauge is a precision tool designed to verify metric fine threaded holes with speed and confidence. It's a practical choice for engineers, buyers, tradespeople, hobbyists, and anyone working with metric threads who needs reliable, quick checks during assembly or maintenance.

Configured for Right Hand threads with a M40 x 1 size and 4H tolerance, this Go/No-Go gauge delivers consistent results in busy workshops. Its knurled body and hardened steel ends are built to withstand daily use, providing a durable inspection solution you can rely on.

• Go/No-Go Design for Quick Validation: Instantly confirm whether a threaded hole meets the required tolerance, speeding up inspections and reducing guesswork during assembly.
• Metric Fine Thread Compatibility – M40 x 1, Right-Hand: Specifically crafted for metric fine threads to ensure accurate checks and reliable mating with corresponding components.
• Hardened Steel Construction for Longevity: Durable, wear-resistant design that stands up to daily use and maintains measurement accuracy over many cycles.

This plug gauge helps streamline quality control and setup workflows by providing clear pass/fail results on metric fine threads. Its rugged construction offers dependable performance in demanding environments, giving you the confidence to maintain tight tolerances and reduce rework in both high-volume production and precision-focused applications.