IC socket

An IC socket comprising:

• a socket main body including an IC accommodation recess mounting an IC thereon, and a contact pin arrangement recess arranged outside the IC accommodation recess;
• contact pins, each of which is provided in the contact pin arrangement recess by corresponding to an arrangement position of a lead line of the IC, and changes a position in a vertical direction, depending on presence or absence of contact with the lead line;
• a cover including a protruding portion in contact with the contact pins, and allowing the contact pins to be pushed;
• and
• detection pins, each of which is inserted in a through-hole formed in the protruding portion of the cover by corresponding to an arrangement position of each contact pin, and moving up and down, depending on a position of the contact pin,
• wherein a relative position of an upper surface of each detection pin relative to an upper surface of the cover differs between a first occasion where the contact pin is not in contact with the lead line and a second occasion where the contact pin is in contact with the lead line.