The present invention provides a rack mount mechanism that includes first and second recessed slides fixed in a stationary position and first and second mounting brackets slideably mounted on the first and second recessed slides, respectively. The first and second mounting brackets each have front and back ends extending, for example, perpendicularly inward from the base of the mounting brackets. A frame is included which is attachable to the computer enclosure and has front and back rails. Each rail has an edge extending, for example, perpendicularly outward from the base of the rail and each edge has a plurality of apertures. An angled bar-nut is coupled to each of the rails by threading the angled portion of each angled bar-nut through an aperture in the edge of the rail and including a screw and a cage nut to secure the angled portion of each angled bar-nut to the edge of each rail. The front and back ends of the first and second mounting brackets are positioned between and coupled to each angled bar-nut and the edge of the front and back rails, respectively.