StarTech.com M6 Cab screws and Cage nuts are used to mount rackmount computer equipment to a storage cabinet or server rack. Coming in a complete package of 50 screws and 50 nuts, there's enough to setup any rack you might be working on.
StarTech.com 50 Pkg M6 Mounting Screws and Cage Nuts for Server Rack Cabinet - rack screws and nuts
Rack screws and nuts
50 nuts, 50 mounting screws for server rack cabinet