The JBO Plug Gauge - Metric Fine (STI) is a precision go/no-go tool designed to verify metric screw thread inserts (STIs). Built for professionals across manufacturing, automotive, and aerospace, it provides quick, reliable checks to ensure metric STI inserts meet exact specifications. This Right Hand gauge is calibrated for M20 x 1.5 (6H) and carries a DAkkS calibration for traceable, audit-ready measurements.

• Calibrated with DAkkS traceability: DAkkS-calibrated measurement validation gives you verifiable, audit-ready results that support quality systems and supplier compliance.
• Metric STI fit: M20 x 1.5, 6H, Right Hand: Specifically sized for metric screw thread inserts, ensuring accurate go/no-go checks and consistent performance with the exact insert class you use.
• Rugged, easy-to-use design: Durable construction with a knurled body and precision-machined ends provides secure handling, fast alignment, and long life in busy shops—even with gloves on.

By delivering precise, traceable measurements of metric STI inserts, this gauge helps you quickly identify out-of-tolerance parts, reduce rework, and maintain tighter process control. Its durable build stands up to daily use in production environments, and the DAkkS calibration supports reliable documentation for quality audits and customer requirements. Whether in a high-volume manufacturing line or a repair shop, it enables faster inspections, consistent results, and greater confidence in your threaded-insert quality.