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South Coast Fasteners keeps the #4-40 x 5/16" Machine Screws, Phillips Pan Head, SEMS (with External Tooth Lock Washers), Coarse, Steel, Zinc Cr+3 in stock and ready to ship. It measures #4 diameter, 5/16" length, coarse thread, Steel with a Zinc Cr+3 finish. Designed for fast, repeatable fastening on the jobsite. These machine screws are part of our Machine Screws line, stocked across industries such as Furniture, Manufacturing, and Construction.
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