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Cap Screws are designed to go through a hole or nut that is pre-tapped to form a mating thread for that screw. Socket head screws for use with allen key.<br><br>

Socket Cap Screw - 5/16-18 x 2-1/2&quot; - Steel Alloy - Thermal Black Oxide - PT - UNC - 100 Pk

011215-socket-cap-screw-5-16-18-x-2-1-2-steel-black-oxide-pt-unc-pkg-of-100

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