The 50-Pack of M6 Mounting Screws for Server Racks and Cabinets is ideal to have available for installing servers, network equipment, A/V equipment and other rack-mountable devices securely into your storage cabinet or server rack. This package contains stainless steel mounting screws only, cage nuts sold separately - See Related Products Tab. Backed by a StarTech.com lifetime warranty. Backed by a StarTech.com lifetime warranty.