Self tapping metal to wood screwsBonded EPDM neoprene washer for a watertight sealHex washer head for fast and secure installationPremium galvanized finish for long lasting corrosion resistanceIdeal for attaching metal roofs and wall panels BCP Fasteners roofing screws provide secure metal to metal fastening with strong holding power. The self-sealing neoprene washer provides a waterproof seal. The premium finish provides exceptional corrosion resistance in harsh outdoor environments. Screws are ideal for attaching roofing and wall panels to steel and wood framing.