The JBO Thread Plug Gauge is a metric fine Go/No-Go inspection tool crafted for precise threaded holes. It targets M8 x 1 fine threads with a right-hand orientation, making it ideal for engineering, machining, and assembly tasks where exact hole size matters.

Built to endure busy workshop use, this gauge uses hardened steel for long-lasting wear resistance. The Go/No-Go design lets you validate hole tolerance at a glance, speeding up quality checks and reducing misfits in assembled parts.

• Go/No-Go quick verification: Instantly confirm whether a threaded hole falls within the required tolerance, speeding inspections and reducing rework.
• Hardened steel durability: Withstand repeated use in demanding environments while preserving measurement accuracy over time.
• Right-hand metric fine thread, M8 x 1 (6G): Precisely matched to metric fine-thread holes, ensuring reliable fit and consistent results across production runs.

This gauge helps you streamline assembly, cut inspection times, and achieve consistent, repeatable results in manufacturing, maintenance, and DIY projects alike.