The JBO Thread Plug Gauge (GO) - Metric Fine - Right Hand - 6H - M80 x 6 is a precision inspection tool designed to quickly verify threaded holes meet size and thread class requirements. It’s ideal for engineers, machinists, quality control teams, and workshop staff who need fast, reliable go/no-go checks on metric internal threads.
Crafted from hardened steel for durability, this GO gauge withstands busy shop floors and repeated use. The knurled body provides a secure grip for easy handling, and the right-handed, 6H specification aligns with standard metric threads for dependable, consistent results.

• Reliable hole verification: Provides a precise GO check that slides into the threaded hole to confirm minimum engagement and correct thread class, delivering a quick pass/fail result during quality inspections.
• Durable hardened steel construction: Built to endure busy workshop conditions with excellent wear resistance, offering long service life and consistent performance over time.
• Ergonomic, user-friendly design: Knurled, slip-resistant surface and a straightforward GO indication make it easy to pick up, align, and use with minimal setup, reducing inspection time and errors.

By using the JBO GO gauge for M80 x 6 threads, your team gains faster, more reliable inspections, helps maintain consistent thread quality across parts, and reduces rework and downtime in QC processes. The hardened steel gauge is a dependable companion for standard metric internal threads (6H) and right-hand threading, delivering repeatable results that you can trust in production environments.