#4-40 x 1 Inch Coarse Black Oxide Medium Carbon Steel Button Head Socket Cap Screw Best Seller Replacement Star Wheel Set for

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#4-40 x 1 Inch Coarse Black Oxide Medium Carbon Steel Button Head Socket Cap Screw Best Seller Replacement Star Wheel Set forSocket head cap screws are commonly used in machine assembly for removable panels and parts. They have a round cap with a hex head and are tightened with a socket wrench drive. Longer caps are easier to see when fastened while button and flat head caps are less likely to snag clothing or linkages. Cap screws with a black oxide or armor coat finish resist corrosion.