The StarTech. com CABSCRWM620 M6 rack screws and M6 cage nuts help in installing rack-mount hardware such as rack-mount hardware such as your server, network or audio/video equipment. Square cage nuts are suitable to use on racks and cabinets with square holes. These nickel-plated screws and nuts in silver color, are resistant to rust. Rack screws and cage nuts is convenient to have on hand for installing rack-mountable equipment, such as your server, network or audio/video equipment. Dimensions: 0. 9"H x 0. 2"W x 0. 5"D. Color: Silver, Finish: Nickel-plated. Rust resistant. Square cage nut design for racks and cabinets with square holes. Includes 20 x M6 mounting screws, 20 x M6 cage nuts, one cage nut installation tool. RoHS and TAA compliant. Weight: 7. 2 oz. Comes with lifetime warranty.