#10 x 2-3/4″ Simpson Strong-Tie DCU T20 Cap Head Composite Deck Screw – 316 Stainless Steel, Gray 04, Pkg. 350

The Simpson Strong-Tie Deck-Drive DCU Composite Screw is designed for composite and PVC decking, trim, and cladding where strength, clean finishes, and durability are a must. Featuring a cap head that prevents mushrooming, these screws ensure a smooth, professional look across all major composite brands. The Quik Guardcoated 316 stainless steel offers dependable corrosion resistance for everything from residential decks to high-exposure and marine environments.

Built for efficiency, the DCU screw features a tri-lobe thread design and unique cut point that penetrate dense composites with ease while minimizing board damage. Inverted upper threads clear away excess material for a flush seat, while a 6-lobe drive provides secure engagement and reduces cam-out. Available in painted head colors to match leading composite decking brands, these screws deliver consistent performance and a seamless finish