The JBO Thread Ring Gauge (GO) - Metric Fine is a precision inspection tool designed to verify external metric thread diameters with quick, reliable pass/fail checks. It’s ideal for manufacturers, machine shops, quality control teams, engineers, and maintenance technicians who need accurate thread conformity in a wide range of projects.

Built for metric fine threads with right-hand engagement, this GO gauge targets the M5 x 0.25 specification and 6h tolerance. Crafted from hardened steel, it delivers exceptional durability and wear resistance for long-lasting performance in busy environments, making it a dependable choice for daily inspection tasks.

• Go gauge for metric fine threads (M5 x 0.25): Quickly determine whether external threads meet exact diameter requirements, speeding up inspections and reducing guesswork in QA workflows.
• Hardened steel construction: Provides outstanding wear resistance and robustness, helping the gauge maintain accuracy through many cycles in demanding shop conditions.
• Right‑hand orientation with 6h tolerance: Ensures consistent, repeatable measurements aligned with standard threading practices, supporting reliable part fits across production runs.

This gauge helps you streamline quality control, cut downtime, and improve overall threading reliability. Use it to verify conformity early in the manufacturing process, minimize rework, and protect downstream assembly performance with confident, repeatable results.