US Patent 7097517 Socket connector for integrated circuit

A socket connector (1) includes an insulative housing (2) and a plurality of terminals (7) received in the housing. The housing defines a plurality of passageways (24) for accommodating the respective terminals. Each passageway forms a step (248) therein for dividing the passageway into a receiving channel (246) and an interfering channel (242). Each terminal defines a fastening portion (70) for securing the terminal in the passageway and the fastening portion forms a pair of shoulders (703) for interfering with the receiving channel. When the terminal is installed into the housing via the corresponding passageway, the shoulders are spaced from the step for forming some clearance between the shoulders and the step.