Order this Fastenmaster External Hex Head Ledger Board Fastener for delivery. Nationally code compliant. ESR #1078. Head-stamped for easy code inspection. Built in washer hex-head design eliminates the need for additional washer, saves you time and money. Costs significantly less per piece than 1/2 in. galvanized lags and washers, save even more money. Guaranteed corrosion resistance for the life of the project, ACQ approved. Free 5/16 in. hex driver bit in every package. Common project applications: remodeling, fencing, storage, cabinets, framing. Common project applications: remodeling, fencing, storage, cabinets, framing.