This 50-pack of M6 mounting screws and cage nuts is convenient to have on hand for installing rack-mountable equipment, such as your server, network or audio/video equipment. They are also suitable for new server rack and cabinet setups - perfect for those times when you drop or misplace a nut or two. The bulk package ensures that you have enough available for all your installation needs, when you need them. Both the server rack screws and the nuts come in an all-black finish for a seamless look. The CABSCREWM62B is backed by a StarTech.com lifetime warranty.