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The 5/16-9 x 4 1/2" Hex Head Lag Screws, Coarse, Low Carbon Steel, Zinc Cr+3 is available now from South Coast Fasteners with fast 3-5 day shipping. These are also known as lag bolts. It measures 5/16" diameter, 4 1/2" length, coarse thread, Low Carbon Steel with a Zinc Cr+3 finish. Suited to fastening thin metal without a pilot hole, it is part of our Stainless Steel Self-Drilling Screws line, stocked across industries such as HVAC, Construction, and Automotive.
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