An IC socket includes: a heat transfer member attached to a socket body in a manner capable of contacting an electrical component and having an opening penetratingly formed at a contact surface that contacts the electrical component accommodated in the socket body; and a temperature sensor that is mounted in the opening of the heat transfer member and has a rod-like tip end portion including a thermosensitive element and extending toward the electrical component, in which the tip end portion, as well as the heat transfer member, contacts the electrical component. In the IC socket, a tubular component having an insertion hole in which an outer surface of a portion of the temperature sensor other than the tip end portion is fitted in a slidable manner in the axial direction of the temperature sensor, is attached to the opening.