A connector configured to be assembled to a plate-shaped panel by being inserted into a through hole (Pa) of said plate-shaped panel, the connector comprising: a body comprising a panel assembly portion configured to be inserted into the through hole (Pa) in a predetermined insertion direction; a first locking portion and a second locking portion, and a rib extending upwards from an upper surface of the panel assembly portion in the insertion direction, wherein the first locking portion and the second locking portion are integrally provided with the panel assembly portion and configured to be engaged with a circumferential edge portion of the through hole (Pa) in a state where the circumferential edge portion is clamped in the insertion direction, wherein the first locking portion has a shape of a double end-supported beam including a pair of beam-shaped portions extending from the panel assembly portion perpendicular to the insertion direction and a protrusion portion connecting free ends of the pair of beam-shaped portions and protruding in the insertion direction toward the plate-shaped panel, and wherein one of the pair of beam-shaped portions is continuous with the rib, characterized in that the protrusion portion comprises: a first part connected to one of the pair of beam-shaped portions and extending toward the plate-shaped panel; a second part connected to the other of the pair of beam-shaped portions and extending toward the plate-shaped panel; and a connection part defining a gap between the first part and the second part and connecting the first part and the second part. a body comprising a panel assembly portion configured to be inserted into the through hole (Pa) in a predetermined insertion direction; a first locking portion and a second locking portion, and a rib extending upwards from an upper surface of the panel assembly portion in the insertion direction, wherein the first locking portion and the second locking portion are integrally provided with the panel assembly portion and configured to be engaged with a circumferential edge portion of the through hole (Pa) in a state where the circumferential edge portion is clamped in the insertion direction, wherein the first locking portion has a shape of a double end-supported beam including a pair of beam-shaped portions extending from the panel assembly portion perpendicular to the insertion direction and a protrusion portion connecting free ends of the pair of beam-shaped portions and protruding in the insertion direction toward the plate-shaped panel, and wherein one of the pair of beam-shaped portions is continuous with the rib, characterized in that the protrusion portion comprises: a first part connected to one of the pair of beam-shaped portions and extending toward the plate-shaped panel; a second part connected to the other of the pair of beam-shaped portions and extending toward the plate-shaped panel; and a connection part defining a gap between the first part and the second part and connecting the first part and the second part. a first part connected to one of the pair of beam-shaped portions and extending toward the plate-shaped panel; a second part connected to the other of the pair of beam-shaped portions and extending toward the plate-shaped panel; and a connection part defining a gap between the first part and the second part and connecting the first part and the second part.