Actuating handle for a window or a door, - with a rotatably mounted handle and an adjoining handle neck , which has a recess on the front side, in which a polygon for actuating a closing mechanism formed in the window or in the door is fixed, and - with a stop body which can be fixed on or in the window or the door, wherein the handle neck of the handle is mounted in an axially-fixed rotatable manner in or on the stop body , - wherein the stop body comprises a lower part and an upper part , - wherein the lower part and the upper part can be connected to one another in a force-fitting, form-fitting and/or frictional manner, - wherein a fitting safety is arranged between the lower part and the upper part , and - wherein the fitting safety has at least one locking element which fixes the handle in at least one distinguished rotational position, and which can be released from its locking against a restoring force via at least one actuating element , wherein each locking element is formed on a slider which can be moved parallel to the stop surface of the window or the door and engages with a latching disc which is connected to the handle neck of the handle in an axially fixed and rotationally fixed manner, characterized in that a locking disc is arranged between the lower part and the upper part , which has a central recess of the same shape as the polygon , and that the slider is slidably stored in a bracket and can be actuated against a restoring force via the actuating element , wherein the locking disc of the actuating handle and the detent disc of the fitting safety being arranged concentrically to the axis of rotation of the handle neck. - with a rotatably mounted handle and an adjoining handle neck , which has a recess on the front side, in which a polygon for actuating a closing mechanism formed in the window or in the door is fixed, and - with a stop body which can be fixed on or in the window or the door, wherein the handle neck of the handle is mounted in an axially-fixed rotatable manner in or on the stop body , - wherein the stop body comprises a lower part and an upper part , - wherein the lower part and the upper part can be connected to one another in a force-fitting, form-fitting and/or frictional manner, - wherein a fitting safety is arranged between the lower part and the upper part , and - wherein the fitting safety has at least one locking element which fixes the handle in at least one distinguished rotational position, and which can be released from its locking against a restoring force via at least one actuating element , wherein each locking element is formed on a slider which can be moved parallel to the stop surface of the window or the door and engages with a latching disc which is connected to the handle neck of the handle in an axially fixed and rotationally fixed manner, characterized in that a locking disc is arranged between the lower part and the upper part , which has a central recess of the same shape as the polygon , and that the slider is slidably stored in a bracket and can be actuated against a restoring force via the actuating element , wherein the locking disc of the actuating handle and the detent disc of the fitting safety being arranged concentrically to the axis of rotation of the handle neck. <EOS>