DeckWise 305 Grade Composite Self-Drilling Deck Screws are designed to meet your highest deck building standards for ease, performance and value. This stainless steel auger-tipped screw provides higher protection against surface mushrooming, staining or corrosion, and is recommended for most composite decking brands. Available with painted heads in Hardwood Brown with a T-20 tip delivering the utmost torque possible. Reversed screw threads compress composite dust and flutes on the shaft ensure composite boards are held tightly to the underlying framing.