threaded into and through planar member 14 via bore 15 which urges legs 16b and 18b upwards thus causing the bottom wall of apertures 20b and 22b to be snugly secured below protrusions 36b and 38b respectively as a result the entire heat sink assembly 10 is safely secured to zif socket 34 with integrated circuit device sandwiched therebetween in order for apertures 20b and 22b to respectively engage protrusions 36b and 38b they must be properly aligned it is preferred that the mounting clip length be at a distance referenced by 34 y 34 in order to ensure a secure connection in accordance with the present invention therefore if socket length 34 x 34 is too short or too long sleeve 40 can be actuated in or out accordingly to precisely adjust the overall mounting clip length to the desired length referenced as 34 y 34 upon the appropriate adjustment of sleeve 40 heat sink member 28 can then be threaded down through planar member 14 to secure the entire assembly in place for heat dissipation turning now to fig3 7 details of the adjustability of mounting clip 12 are shown fig3 illustrates a cross sectional view through the line 3 3 of fig1 socket 34 is provided with integrated circuit device 24 installed therein via pins 24a central sleeve leg 18b downwardly depends from sleeve 40 planar member 14 includes a sleeve engagement member 14a which carries stop protrusion 44 thereon stop guide channel 42 is provided through sleeve 40 for containing and guiding the sliding movement of stop protrusion 44 therein as a result sleeve 40 is easily movable over sleeve engagement member 14 to adjust the overall mounting clip length to that shown in fig2 the stop protrusion 44 and.