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Buy the 5/16-9 x 4 1/2" Hex Head Lag Screws, Coarse, Low Carbon Steel, Plain online from South Coast Fasteners. It measures 5/16" diameter, 4 1/2" length, coarse thread, Low Carbon Steel with a plain finish. Suited to wood framing, decking, and heavy timber connections. These lag bolts are part of our Lag Bolts line, stocked across industries such as Lawn & Garden, Construction, and Manufacturing.
Pairs well with Flat Washers on the nut side. Please contact us if you need assistance in selecting the right product or placing an order.