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South Coast Fasteners keeps the 9/16-18 x 4" (PT) Hex Head Cap Screws, Fine, Grade 8, Plain in stock and ready to ship. Commonly called hex bolts. It measures 9/16" diameter, 4" (PT) length, fine thread, Grade 8 with a plain finish. Built for fast, repeatable fastening on the jobsite, it is part of our Grade 8 Hex Cap Screws line, stocked across industries such as Construction, HVAC, and Furniture.
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