The JBO Plug Gauge for UNC (STI) wire inserts is a precision measuring tool designed to verify UNC STI threaded inserts. This right-hand gauge, sized No. 2 x 56 with a 2B tolerance, is calibrated to deliver reliable, repeatable measurements on busy shop floors and in QA labs.

Manufactured and assessed in accordance with ANSI/ASME UNC thread standards, these gauges support accurate pitch-diameter checks for Helicoil-style inserts across manufacturing, automotive, and aerospace applications. The DAkkS-calibrated designation provides traceable measurement accuracy for quality records and audits.

• DAkkS-calibrated for traceable accuracy: ensures measurements are linked to national standards, supporting QA documentation and reliable audit trails.
• UNC (STI) compatibility for precise pitch-diameter checks: specifically built to gauge UNC STI inserts, enabling confident verification of fit and function.
• Durable, easy-to-use construction: robust, knurled body and precision-machined ends deliver durable performance and consistent readings in tight workspaces.

Using the JBO UNC (STI) Plug Gauge helps you quickly confirm correct insert fit, streamline inspection workflows, and maintain consistent results across production runs. Its traceable calibration and standards-based design support accurate quality metrics and dependable performance in manufacturing, automotive, and aerospace environments.