#10 x 2-3/4" Simpson Strong-Tie DCU T20 Cap Head Composite Deck Screw - 316 Stainless Steel, Gray 05, Pkg. 1,750 Quik Drive Subfloor/Underlayment Screws Ensure the spike is level

Ensure the spike is level and properly aligned before securing the 4x4 post into the bracket using appropriate fasteners (sold separately)

Buttress threads available in #8 sizes for added holding power

Each size comes with a hex washer head for superior drivability and increased bearing surface

They have a soft bond that ensures accurate cuts in materials like cured concrete while providing excellent blade life

#10 x 2-3/4" Simpson Strong-Tie DCU T20 Cap Head Composite Deck Screw - 316 Stainless Steel, Gray 05, Pkg. 1,750 Quik Drive Subfloor/Underlayment Screws Ensure the spike is levelThe 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