The JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads. This Go/No-Go gauge delivers fast, definitive checks of threaded holes, helping engineers, technicians, buyers, and hobbyists ensure components will thread together cleanly. Designed for right-hand M40 x 1 threads in the 6G class, its hardened steel body provides durable, repeatable performance in busy workshops.

• Go/No-Go design for fast, decisive checks: Quickly confirm whether a hole is within tolerance, reducing guesswork and rework.
• Hardened steel construction for longevity: Withstands daily use, resisting wear and maintaining accuracy over many inspections.
• Metric fine thread compatibility: M40 x 1, right-hand, 6G: Ensures precise, repeatable checks for common metric fasteners, supporting reliable assembly and quality control.

With the JBO Thread Plug Gauge, you gain confidence in every thread inspection. It speeds up testing, lowers downtime, and helps you ensure parts fit first time. The durable build and precise tolerances translate to consistent results across jobs, whether in a workshop, lab, or on-site maintenance.