The JBO Thread Plug Gauge is a precision tool designed for quick, reliable verification of metric fine internal threads. Tailored for Right Hand M27 x 2 applications with 6G tolerance, its Go/No-Go design lets engineers, machinists, quality-control professionals, and even careful hobbyists confirm hole threads at a glance and prevent costly assembly issues.

Crafted from hardened steel for lasting durability, this gauge stands up to daily use in busy workshops, maintenance bays, and production lines, resisting wear and maintaining accuracy over time.

• Go/No-Go inspection design: Enables fast, decisive checks of threaded holes, reducing inspection time and minimizing guesswork during assembly.
• Metric fine thread accuracy (M27 x 2, 6G): Precisely matches the internal thread spec to ensure reliable fits and consistent results across production runs.
• Durable hardened steel construction: Delivers long service life in demanding environments with excellent wear resistance and minimal maintenance.

Using this gauge helps streamline quality control and setup, reducing downtime and rework while delivering confidence that threaded joints will assemble correctly the first time. It supports faster inspections, consistent performance, and dependable results across projects for technicians and operators at every skill level.