OVERVIEW: Deck-Drive DCU COMPOSITE Screw #10 x 2-3/4 in. T20, Type 316 (1750-Qty) The Type 316 stainless-steel Deck-Drive DCU Composite screw provides severe-level corrosion resistance for all types of composite and PVC decking, and is especially suited for applications in environments with chlorides. The DCU penetrates composite decking with a Type-17 point and is engineered with inverted upper threads that clear excess material to ensure a clean, secure installation. Also available with...