... steel, zinc plating 2.Screw sizes available:M3-M24 3.Lead time:15 days 4.OEM or ODM are welcome IFI156 blue zinc plating ... steel, S25C, S20C, SUS304, SUS316 or any other as per your need.4.Surface treatmentPlain finish, black oxide, zinc plating(white ... , yellow, black colour), nickel plating, chromate plating, HDG, Dacromet, Geomet.5.Salt ...