#9 x 1" Hex Washer Head Metal Roof Screw(Multiple Sizes in Listing) Self starting/self tapping metal to wood, sheet metal roofing, siding screws with EPDM washer seal. 100 PCS (#9 x 1") Hex washer head, self starting roof screw with EPDM washer seal Corrugated roofing and corrugated siding screws Light Gray colored anti-corrosion coating Roofing screw has a sharp point to enable it to penetrate metal roofing and siding without a drill Metal-to-wood roof screws