JBO Plug Gauge - UNC (STI) Heli Coil Gauge - Right Hand - 2B - 5/16 x 18 - Calibrated (DAkkS Calibration) Tiny Tool Holders delivering secure tool gripping and

delivering secure tool gripping and precise concentricity for milling

and easy changes in busy production environments

Its clear sizing cues and robust construction allow quick

Designed for machinists needing tight ISO H5 tolerance at a 25

The combination of left-hand spiral flutes and right-hand cutting supports efficient chip evacuation

JBO Plug Gauge - UNC (STI) Heli Coil Gauge - Right Hand - 2B - 5/16 x 18 - Calibrated (DAkkS Calibration) Tiny Tool Holders delivering secure tool gripping andThe 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