FastenMaster 8 in. TimberLOK® Structural Heavy-Duty Wood Screw, 12-Pack are for a variety of construction projects including attaching rafters or trusses to the top plate, landscape timbers, fences, decks, headers, stair stringers, and more. These screws are widely by professional contractors across the country to meet building codes while reducing costs for rafter and truss to top plate connections. Designed to save time and labor, they require no pre-drilling. Tested and proven to comply with the latest IRC and IBC standards, these TimberLOK® screws reliable performance in most applications. They are engineered to replace traditional 3/8" lag screws, featuring a unique tapered head that easily countersinks into wood for a clean, flush finish. Their aggressive threads and sharp point allow for quick and easy installation even in the densest woods, making them an efficient and durable choice for heavy-duty wood fastening needs. Model Number: FMTLOK08-12