A contact including: a contact body including a contact portion that is configured to be brought into contact with a mating contact portion of a mating contact, and a supporting member that is a component separate from the contact body and supports the contact portion, the contact portion including a contact portion body having a flat plate shape, the supporting member including a supporting member body that is configured to receive therein the mating contact portion and the contact portion, the supporting member body having a square tube shape, wherein the supporting member body includes an upper wall and a lower wall which are opposed to each other, and a pair of side walls (221C, 221D) which are at right angles to the upper wall and the lower wall, respectively, and are opposed to each other, the supporting member body including a spring portion (222, 223) configured to bend in a spring portion-bending direction orthogonal to a direction of the central axis of the supporting member for bringing the inserted mating contact portion into contact with both the contact portion body and the supporting member body, the spring portion (222, 223) being provided on at least one of the upper wall and the lower wall, the contact portion including a contact point portion protruding from the contact portion body towards the inserted mating contact portion; characterized in that: the pair of side walls (221C, 221D) each have a hole (221C1, 221D1) formed therethrough, and in that the contact portion includes a plurality of protrusions which are continuous with the contact portion body, are inserted into the holes (221C1, 221D1) and can move in the spring portion-bending direction within the holes (221C1, 221D1) so as to be supported by the pair of side walls (221C, 221D) in a movable manner. a contact body including a contact portion that is configured to be brought into contact with a mating contact portion of a mating contact, and a supporting member that is a component separate from the contact body and supports the contact portion, the contact portion including a contact portion body having a flat plate shape, the supporting member including a supporting member body that is configured to receive therein the mating contact portion and the contact portion, the supporting member body having a square tube shape, wherein the supporting member body includes an upper wall and a lower wall which are opposed to each other, and a pair of side walls (221C, 221D) which are at right angles to the upper wall and the lower wall, respectively, and are opposed to each other, the supporting member body including a spring portion (222, 223) configured to bend in a spring portion-bending direction orthogonal to a direction of the central axis of the supporting member for bringing the inserted mating contact portion into contact with both the contact portion body and the supporting member body, the spring portion (222, 223) being provided on at least one of the upper wall and the lower wall, the contact portion including a contact point portion protruding from the contact portion body towards the inserted mating contact portion; characterized in that: the pair of side walls (221C, 221D) each have a hole (221C1, 221D1) formed therethrough, and in that the contact portion includes a plurality of protrusions which are continuous with the contact portion body, are inserted into the holes (221C1, 221D1) and can move in the spring portion-bending direction within the holes (221C1, 221D1) so as to be supported by the pair of side walls (221C, 221D) in a movable manner. the pair of side walls (221C, 221D) each have a hole (221C1, 221D1) formed therethrough, and in that the contact portion includes a plurality of protrusions which are continuous with the contact portion body, are inserted into the holes (221C1, 221D1) and can move in the spring portion-bending direction within the holes (221C1, 221D1) so as to be supported by the pair of side walls (221C, 221D) in a movable manner.