A socket for an electric component may have a socket main body, a plurality of contact pins disposed within the socket main body, a socket cover, a slide plate disposed inside the socket main body to be movable up and down, and drive levers which are provided between the socket main body and the bottom face of the socket cover. The drive levers press both end portions of two opposing sides of the slide plate by a down-movement-operation of the socket cover to lower the slide plate. The socket may also include sub-levers provided between the socket main body and the bottom face of the socket cover for pressing one or plural positions of other opposing two sides of the slide plate, which oppose to each other in a direction perpendicular to the two opposing sides pressed by the drive levers to lower the slide plate.