Recoil Helicoil Screw Thread Insert STI Tap 

Recoil Helicoil Screw Thread Insert STI Tap Heli-Coil STI (Screw Thread Insert) taps are used for general and machine operations. The standard Sti Tap can be used as a basic tool to create threads ideal for stainless steel threaded inserts. Screw Tapping Tool is recommended that these taps are used with a CNC machine or other high-precision equipment in order to ensure a proper class of fit. Size& Type： Metric: M2-M30, for Straight and Spiral type Also from UNC2-56 to 1” Other sizes on request