A screw element comprising an internal torque limitation for fastening a line, in particular a liquid-conducting line, to a counter-piece, in particular to a device connector or to a coupling for a further line, said screw element having a connection part , which preferably has a thread, and an actuation part ; and having a torque limiting unit which limits a torque that can be transmitted from the actuation part to the connection part , wherein the torque limiting unit is arranged between the connection part and the actuation part and has a separate limiting element which can be assembled from two limiting element parts (19', 19") connectable to one another and which limits the torque limiting unit in an axial direction of a longitudinal axis (A) of the screw element , wherein the connection part and the actuation part are rotatable about the longitudinal axis of the screw element, but are axially connected to one another via a connection point so that the entire screw element can be rotated about the longitudinal axis and the rotary movement can be transmitted to the connection part , wherein the axial connection keeps the actuation part and the connection part beside one another as long as the applied torque does not exceed a limit value, wherein the axial connection is disconnected as soon as the limit value is exceeded, whereby the actuation part is rotatable relative to the connection part , characterized in that , in the assembled state, the limiting element has a peripheral groove , in particular a throughgoing peripheral groove , in which a recognition element can be fixed, with the recognition element being designed as a coding ring which can be embedded in the peripheral groove . a connection part , which preferably has a thread, and an actuation part ; and having a torque limiting unit which limits a torque that can be transmitted from the actuation part to the connection part , wherein the torque limiting unit is arranged between the connection part and the actuation part and has a separate limiting element which can be assembled from two limiting element parts (19', 19") connectable to one another and which limits the torque limiting unit in an axial direction of a longitudinal axis (A) of the screw element , wherein the connection part and the actuation part are rotatable about the longitudinal axis of the screw element, but are axially connected to one another via a connection point so that the entire screw element can be rotated about the longitudinal axis and the rotary movement can be transmitted to the connection part , wherein the axial connection keeps the actuation part and the connection part beside one another as long as the applied torque does not exceed a limit value, wherein the axial connection is disconnected as soon as the limit value is exceeded, whereby the actuation part is rotatable relative to the connection part , characterized in that , in the assembled state, the limiting element has a peripheral groove , in particular a throughgoing peripheral groove , in which a recognition element can be fixed, with the recognition element being designed as a coding ring which can be embedded in the peripheral groove . <EOS>