• High hex washer head and sharp twin lead thread design pierces and threads multiple laps of high tensile light gauge steel up to 26 ga
• Master gripper low-profile pancake head, Quadrex drive screws fasten standing seam roof clips or hidden fastener profile panels
• Highest pull-out values in the industry
• Patented flow cone grey EPDM washer
• Metal panel to wood girt or purling

Applications: For roof or wall panel to wood frame, panel over insulation to wood framing, stitching panels, ideal for fastening residential steel roof panels