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The HILLMAN FASTENERS 230051 is a zinc-plated hex head lag bolt sold in a 100-piece pack, sized at 5/16 inch diameter by 2 inches in length. Lag bolts are heavy-duty wood screws designed to fasten structural components together, including lumber, timber framing, and hardware to wood substrates. The hex head drive accepts a standard wrench or socket, making installation fast and consistent. The zinc plating provides basic corrosion resistance for general construction and indoor or sheltered outdoor applications. These are a working fastener used by carpenters, electricians, plumbers, and HVAC technicians when anchoring equipment, brackets, and structural assemblies to wood framing.
The 230051 lag bolt is suited for residential and light commercial construction tasks where a strong, reliable threaded fastener is required in wood. Common applications include securing equipment mounting brackets, ledger boards, deck framing, and structural hardware. The 5/16 x 2 inch size is a widely used dimension for attaching moderate loads to dimensional lumber and engineered wood. The 100-piece pack quantity supports job-site use where multiple fasteners are needed per installation. Sold in a box quantity of 12 packs per case.
Designed as a standard hex head lag bolt for use in dimensional lumber, timber, and wood-based structural assemblies where a 5/16 inch diameter threaded fastener is specified.
Lag bolts should be installed by drilling a pilot hole sized appropriately for the bolt diameter to prevent wood splitting, following standard carpentry practice. A socket wrench or impact driver with a hex socket is required for proper seating. Do not over-drive; stop when the head is flush or snug against the substrate or hardware being fastened. Follow applicable building codes, including IRC or IBC provisions, when lag bolts are used in structural or load-bearing connections.
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