Acorn SW-MW15G250 Roofing Screw 1.5-Inch

Best for metal-to-wood screws. Self-piercing tapping screws forged from heat treated steel case hardened for roofing and siding applications. A hex washer head with assembled EPDM washer allows for easy driving and adapts to the metal surface for a secure and long-lasting seal. lead type 17 point and Hi-Lo threads provide a faster drive time and stronger resistance to pullout. All screws are 1000 hour salt spray test dacro-coated.