Abstract: The locking member of a ZIF socket, which is movable between a locked position, in which high contact forces are present between contact springs within the socket and pins extending from an electronic module into the socket, and an unlocked position, in which the pins are released from the contact springs, is held in the locked position by means of a portion of a clamping spring inserted into a gap between the locking member and a portion of the housing of the ZIF socket. The clamping spring also holds a heat sink in place on the electronic module.