Grip-Rite 16HGSTPD1 Deck Nail, 16D, 3-1/2 in L, Steel, Hot-Dipped Galvanized, Flat Head, Spiral Shank, 1 lb

For patio and deck construction. Thin shank reduces splitting of wood. Checkered head reduces hammer slippage. Ring shank for use with softer woods and with permanent heavy-duty construction where vibration can work nail loose, spiral shank reduces splitting in hard woods.