The JBO Thread Plug Gauge is a precision tool designed for metric coarse threads, featuring Right Hand orientation, 6G tolerance, and M30 x 3.5 size. Its Go/No-Go design enables quick, repeatable checks to verify hole threads meet standard dimensions.

Built with a knurled body for secure grip and easy handling in busy shops, this gauge is crafted from hardened steel to withstand demanding use and provide long-lasting accuracy.

• Go/No-Go Design for Quick, Repeatable Checks: The go/no-go design provides fast confirmation of hole threads meeting the M30 x 3.5 metric coarse standard, helping you accept or reject parts with confidence on the shop floor.
• Hardened Steel Construction for Long-Lasting Durability: Built to resist wear and keep its accuracy through frequent use in production environments and inspections.
• M30 x 3.5 Metric Coarse, Right-Hand Compatibility: Precisely sized for standard metric coarse threads and right-hand orientation to match common tooling, ensuring accurate gauging and easy integration into existing processes.

In daily use, this gauge speeds up quality checks, minimizes guesswork, and protects downstream assembly. With durable hardened steel and a reliable Go/No-Go process, you’ll get consistent measurements, fewer rejected parts, and smoother production flows—from inspection to final assembly.