JBO Plug Gauge - UNC (STI) Heli Coil Gauge - Right Hand - 3B - No. 4 x 40 - Calibrated (DAkkS Calibration) Tiny Tool Inserts Left‑hand spiral flute with right‑hand

Left‑hand spiral flute with right‑hand cutting: Optimizes chip control and enables stable

resisting wear and maintaining accuracy over many uses

intuitive use

This reamer helps you finish holes to exact dimensions with repeatable results

End Mill Type: Corner radius end mill suitable for precise radii and smooth transitions in pockets and edges

JBO Plug Gauge - UNC (STI) Heli Coil Gauge - Right Hand - 3B - No. 4 x 40 - Calibrated (DAkkS Calibration) Tiny Tool Inserts Left‑hand spiral flute with right‑handThe JBO Plug Gauge UNC (STI) Right Hand 3B No. 4 x 40 Calibrated (DAkkS Calibration) is a precision measurement tool designed for UNC screw thread inserts (STIs). These Helicoil gauges are manufactured and assessed in accordance with ANSI ASME thread standards, delivering reliable checks in manufacturing, automotive, and aerospace environments. Built for right hand UNC STI inserts, this gauge helps verify pitch diameter and conformity quickly and