#10 x 2-3/4" Simpson Strong-Tie DCU T20 Cap Head Composite Deck Screw - 316 Stainless Steel, Gray, Pkg. 70 Flat Head 410 Stainless Steel Concrete Screws Each DTT2 includes (8) 1/4"

Each DTT2 includes (8) 1/4" x 2-1/2" Strong-Drive SDS Heavy-Duty Connector screws for secure attachment to deck joists or framing members

5" hole that is 10" deep

If you have a nominal post measuring 3-1/2x3-1/2" you will need an APVB44 Decorative Post base

Pergolas & Outdoor Structures: Perfect for use in pergolas

Box of 25 connectors

#10 x 2-3/4" Simpson Strong-Tie DCU T20 Cap Head Composite Deck Screw - 316 Stainless Steel, Gray, Pkg. 70 Flat Head 410 Stainless Steel Concrete Screws Each DTT2 includes (8) 1/4"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