Abstract: A connector includes an electrical insulator made of an insulating material; a plurality of contacts fixed to the electrical insulator aligned in one direction, each contact including a contacting arm which can be in electrically continuous conduction with one of front and rear surfaces of a connection target; and a base portion from which the contacting arm extends to support the contacting arm; and an actuator which presses against the other of the front and rear surfaces of the connection target. At least one of the contacts includes a holding arm which extends from the base portion in a direction substantially parallel to the contacting arm to press the actuator toward the connection target. One of a through-hole and a cutout portion is formed in at least one of the contacts through the base portion thereof in a thickness direction thereof.