The JBO Plug Gauge - UNC (STI) Right Hand, 2B, 5/16 x 18, Calibrated with DAkkS traceability, is a precision measuring tool designed specifically for UNC (Unified National Coarse) Screw Thread Inserts (STIs). This gauge helps professionals quickly verify the pitch diameter and overall fit of STI inserts, ensuring reliable engagement and proper assembly in your projects.

Manufactured and assessed in accordance with ANSI/ASME thread system standards, the JBO UNC plug gauge delivers consistent, repeatable measurements across manufacturing, automotive, and aerospace applications. The DAkkS-calibrated design provides auditable calibration data for quality control programs and compliance requirements.

• DAkkS-calibrated, traceable measurements: Provides auditable, repeatable pitch-diameter checks with certified calibration records that support quality audits.
• UNC (STI) right-hand compatibility: Optimized for UNC STI 5/16 x 18 inserts, delivering reliable readings to verify correct pitch diameter and fit.
• Durable, user-friendly design: Knurled, rugged body and robust interfaces resist wear in busy workshops, offering comfortable handling and quick setup.

Using this gauge helps you ensure inserts meet exact UNC STI specifications, streamline inspection workflows, and reduce rework caused by incorrect pitch diameter. The combination of DAkkS-calibrated accuracy and a durable, easy-to-use design supports efficient quality control and confident procurement or production decisions.