Abstract: A seat track assembly includes a first track having a mounting wall and first and second spaced apart side walls extending from the mounting wall, and a second track having a base flange and first and second spaced apart side flanges extending from the base flange. The side walls and the side flanges each have a pair of flat surfaces which cooperate to define a pair of load transmission channels. The load transmission channels are preferably square-shaped and oriented at 45 degrees. Load transmission elements are positioned in the load transmission channels. At least one of the first and second tracks produce an interference with the load transmission elements so that at least one of the first and second tracks is resiliently deflected by the load transmission elements to bias the load transmission elements into engagement with each of the four flat surfaces.