FastenMaster LedgerLok No. 3 S X 3-5/8 in. L Hex Hex Washer Head Deck Screws 50 pk

LedgerLok is a code-compliant structural wood screw engineered to fasten a deck ledger board to the rim joist of a house with no predrilling. LedgerLok replaces lag screws and through-bolts, has been coated with a proprietary three-step coating process that protects against corrosion (even in pressure treated wood) and is ACQ approved. The built-in washer head eliminates the need for an additional washer, saving time and money. The large hex-head allows for greater bit engagement, reducing cam-out.
Head-stamped for easy code inspection
Built in washer hex-head design eliminates the need for additional washer Designed to attach deck ledger boards to a house structure