Tool device, in particular for machining a workpiece, for receiving in a hand-held power tool that is able to rotatably operate the tool device about an output shaft of a tool receptacle device, having at least one connector device which is releasably connectable to an output shaft of the hand-held power tool, wherein the connector device is able to be fastened to the tool receptacle device in such a manner that an output axis of the output shaft and a tool rotation axis (a) of the tool device substantially coincide; wherein the connector device has a clearance; wherein the connector device has at least one clamping wing which in the radial direction of the tool rotation axis (a) at least partially delimits the clearance and which substantially in the radial direction to the tool rotation axis (a) is delimited by a first delimitation edge which lies on a first, in particular minimum, delimitation circle about the tool rotation axis (a); wherein the clamping wing extends at least substantially along a plane orthogonal to the tool rotation axis (a), characterized in that the clamping wing is asymmetrical, in particular not mirror-symmetrical, in relation to each symmetry plane defined by a radial and an axial direction of the tool rotation axis (a); wherein the connector device has at least one tool assembly coding element (304, 306, 312, 314) which in a state of the tool device disposed on the tool receptacle device is provided for interacting with at least one assembly coding element (300, 302, 308, 310) of the tool receptacle device; wherein the at least one tool assembly coding element (304, 306, 312, 314) is disposed on the at least one clamping wing of the connector device and is configured as a clearance which extends completely through a maximum material thickness of the clamping wing. wherein the connector device is able to be fastened to the tool receptacle device in such a manner that an output axis of the output shaft and a tool rotation axis (a) of the tool device substantially coincide; wherein the connector device has a clearance; wherein the connector device has at least one clamping wing which in the radial direction of the tool rotation axis (a) at least partially delimits the clearance and which substantially in the radial direction to the tool rotation axis (a) is delimited by a first delimitation edge which lies on a first, in particular minimum, delimitation circle about the tool rotation axis (a); wherein the clamping wing extends at least substantially along a plane orthogonal to the tool rotation axis (a), characterized in that the clamping wing is asymmetrical, in particular not mirror-symmetrical, in relation to each symmetry plane defined by a radial and an axial direction of the tool rotation axis (a); wherein the connector device has at least one tool assembly coding element (304, 306, 312, 314) which in a state of the tool device disposed on the tool receptacle device is provided for interacting with at least one assembly coding element (300, 302, 308, 310) of the tool receptacle device; wherein the at least one tool assembly coding element (304, 306, 312, 314) is disposed on the at least one clamping wing of the connector device and is configured as a clearance which extends completely through a maximum material thickness of the clamping wing.