5/8-11 x 2-1/4" Socket Cap Screw - Steel - Black Oxide - UNC - Pkg of 25 - USA - Holo-Krome 72274

5/8-11 x 2-1/4" socket cap screw - steel - black oxide - unc - pkg of 25 - usa - holo-krome 72274 socket head cap screws are ideal for precision work with close tolerances and applications needing a well tooled appearance. socket head cap screws supply greater tensile strength than equivalent hex head caps screws, while requiring less surface area to counterbore. thermal black oxide finish features a standard heat treatment finish which includes light drying oil; chemical black oxide is a chemical treatment plus rust resistant with no drying oil.