<p>The invention addresses the problem of providing an end effector and a robot capable of automating the process of gripping and rotating a screw member and of limiting the cost required for said process. To solve the problem, the end effector and robot comprise: a gripping part that grips a screw member so as to be rotatable around the axial line of the screw member; and a rotating part that is provided on the axial line, moves linearly along the axial line in contact with the head of the screw member that is gripped by the gripping part, and rotates the screw member around the axial line by a rotation that occurs with the linear motion.</p>
