M5 x 0.8 x 20mm Flat Socket Cap Screw - Steel - Black Oxide - UNC - Pkg of 100 - Holo-Krome 87068

M5 x 0.8 x 20mm flat socket cap screw - steel - black oxide - unc - pkg of 100 - holo-krome 87068 flat head socket cap screws are used for flush mounting of sections, usually where one part slides over another part or one part is mounted on another. flat head screws are limited by configuration in their tensile strength capability. 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.