Hammond's 1421 series rack screws are designed for secure mounting of equipment in standard 19-inch racks. The screws feature a slotted oval head and a nickel plate finish, providing both functionality and a clean aesthetic. They are typically used in data centers, audio/video installations, and other applications requiring rack-mounted equipment. Available in various package quantities to suit different project needs, from small installations to large-scale deployments. The included steel cup washers provide a secure and even clamping force.