Socket mounted on printed circuit board

A socket mounted on a printed circuit board (PCB), which includes a plurality of pads and at least two soldering areas, and the socket comprising:

• an insulative housing having a plurality of slots, and a border projected therefrom and around the slots for orientating an electronic component,
• a plurality of contacts corresponding to the pads and received in the slots, respectively;
• wherein the contacts have an end exposed out of the slots and are bent, and a topmost portion of the contacts is lower than a top surface of the border;
• at least two screw nuts being adjacent to the border of the insulative housing and relative to the soldering area, so as to connect the insulative housing to the PCB via the screw nuts said screw nuts including a solder end electrically connecting with the pads, the solder end having at least one dent embedded with a solder ball;
• and
• at least two screws mating with the screw nuts and forcing the electronic component downward to electrically connect to the PCB.