FastenMaster Ledgerlok 5 in. Flat Head Structure Screw, 50-Count is a code-compliant structural wood screw specifically engineered to fasten a deck ledger board to the rim joist of a house without the need for predrilling. Designed for attaching deck ledgers, this fastener comes in a 5-inch length i for double ledgers and thicker applications. It features a wide washer head that drives flush to the ledger surface, eliminating the need for an additional washer and saving both time and money. The innovative TORX TTAP Drive System enhances installation efficiency. Coated with a proprietary three-step process, these screws resist corrosion, including in pressure-treated wood, and are ACQ . Ledgerlok screws replace traditional lag screws and through-bolts, ing a durable, rust-resistant solution for the life of your project. Tested and supported by engineering data conforming to the latest ICC standards, these fasteners are i for code-compliant connections in treated lumber, though they are not for saltwater applications. Model Number: