The JBO Thread Plug Gauge is a right‑hand, metric fine thread plug gauge designed for fast, dependable internal thread inspection. Engineered for M6 x 0.5 with a 6H tolerance, its Go/No-Go design lets you quickly determine whether a threaded hole meets spec, ensuring parts fit together cleanly.

The gauge is built for durability: a hardened steel core resists wear in daily use, and the knurled grip provides a secure, comfortable hold even when hands are oily or gloved. This rugged construction is designed to deliver long-lasting, repeatable performance in busy workshops and production floors.

• Go/No-Go Quick Verification for Metric Fine Threads: perform a fast pass/fail check on M6 x 0.5 holes. The Go side confirms minimum size, while the No-Go side flags holes that are out of tolerance, enabling rapid, reliable inspections and reducing rework.
• Hardened Steel Construction with Secure Grip: a durable, wear‑resistant body paired with a textured knurl ensures you can handle the gauge confidently, even in demanding shop conditions or with gloves on.
• Right-Hand M6 x 0.5, 6H Compliance: designed for standard right‑hand internal threads and the 6H tolerance class, delivering consistent, repeatable results across parts and production runs.

Using the JBO Thread Plug Gauge speeds setup and quality checks, minimizes guesswork, and supports reliable assembly across projects. It helps maintain precise hole readiness, reduces downtime, and gives teams confidence in fit and function during manufacturing, maintenance, and inspection tasks.