Hillman 47755 Galvanized Square Drive Deck Screw, 8 X 2-1/2-Inch, 500 pack 500 pieces per package Galvanized exterior is designed for exterior use and perfect for decks, fences and furniture Square drive bits provide a more durrable head to prevent stripping Galvanized screws provide excellent corrosion protection For use with ACQ, CA, and CCA treated wood (not recommended for cedar or redwoods)