The JBO Plug Gauge - Metric Fine (STI) is a precision go/no-go gauge designed to verify metric screw thread inserts (STIs). With a right-hand orientation and a 6H tolerance for M12 x 1.5, it provides a quick, reliable way to confirm that inserts meet specification. Built to ANSI/ASME thread standards, this gauge supports accurate inspections across manufacturing, automotive, and aerospace environments.

Crafted for everyday use, the gauge features a rugged, easy-to-grip body that stands up to repeated inspections in busy shops. The DAkkS-calibrated certificate delivers traceability for QA records, helping you meet rigorous quality and audit requirements with confidence.

• DAkkS-Traceable Calibration: Provides auditable, metrology-grade results that simplify quality documentation and supplier audits, so you can prove conformity with confidence.
• Metric STI Compatibility (M12 x 1.5, 6H, Right-Hand): Aligns with standard STI insert sizes and thread specifications for fast, accurate go/no-go checks with minimal guesswork.
• Durable, Ergonomic Construction: Designed for daily use with a textured grip and robust build, enabling comfortable, repeatable measurements over long inspection sessions.

Integrating the JBO Plug Gauge into your inspection routine helps streamline quality control, reduce downtime from misfits, and ensure consistent results across shifts. Its precise metric design and traceable calibration make it a dependable tool for engineers, buyers, machinists, and quality professionals working with STI inserts in demanding applications.