A wheel nut or axle nut for vehicles, having a body, having a central threaded hole, having a peripheral wall, having an abutment face at a lower side, wherein the nut also has a plurality of wrench faces on the peripheral wall of the nut body for tightening or releasing the nut by a tool which cooperates with the wrench faces. In the body at least one recess is provided in which a sensor element is arranged, wherein the sensor element is connected to a wireless interface which is configured to transmit a sensor signal of the sensor element wirelessly to an external reception unit.

Disclosed is a fastening element, which can be provided in particular as a wheel nut, to be screwed onto a thread. The fastening element includes a nut with an internal thread. In addition, the fastening element includes an expansion sleeve which connects axially to the nut. The expansion sleeve is developed without an internal thread and is realized in one piece with the nut. In addition, the fastening element includes a pressure plate. The pressure plate is arranged on a side of the expansion sleeve remote from the nut and is fastened so as to be captively rotatable on the expansion sleeve.

A quick change system for carriage wheels comprising an axle adapter and a lock for axial locking of a wheel on the axle adapter, wherein the lock has at least one locking member and a release cooperating with the locking member, wherein the locking member axially locks the wheel on the axle adapter in a locking position, and the release and the locking member cooperate such that during moving of the release, the locking member can be brought from the locking position into a releasing position, in which the wheel is released axially.

A capped fastener is provided with deflected projections on the nut body for securing a cap on the nut body. The deflected projections fit within a double walled edge of the cap. The projections are deflected through a simple method during the assembly process.

A capped fastener is provided with deflected projections on the nut body for securing a cap on the nut body. The deflected projections fit within a double walled edge of the cap. The projections are deflected through a simple method during the assembly process.

A wheel spacer disk for motor vehicles including a center opening, a plurality of wheel bolt openings and at least two wheel hub centering elements for centering the wheel spacer disk relative to a wheel hub. A diameter of the center opening is greater than a diameter of a centering element of the wheel hub, and at least two wheel centering pins are provided for centering the wheel spacer disk relative to a wheel. The at least two wheel hub centering elements are arranged on a circumferential wall of the center opening, and the at least two wheel hub centering elements project at least partially into the center opening of the wheel spacer disk.

A wheel spacer disc for motor vehicles having a plurality of wheel bolt openings, a rim centering element for centering a rim relative to the wheel spacer disc, and a wheel hub centering element for centering the wheel spacer disc relative to a wheel hub. The plurality of wheel bolt openings are designed in each case as stepped openings for the respective partial reception of shaft nuts, wherein a section of the stepped openings having a greater diameter is arranged on a side of the wheel spacer disc on which the rim centering element is arranged.

Method and tool (46, 50) for removal of the locking element (42) from a centre-lock wheel hub with a wheel nut threadingly engaged with the wheel hub, where the locking element engages with the wheel hub (24) and with the wheel nut (26) thereby to prevent relative rotation of the wheel hub and the wheel nut. Removal is made easier by fitting an extraction apparatus (50) having a first end with an externally threaded section, threadingly engaged with a corresponding internal thread (56) of the locking element, a second end provided with an engagement element for imparting rotational torque to the extraction apparatus, and a bearing surface (60, 62), located radially outside the externally threaded section and axially displaced from the externally threaded section, contacting the wheel nut.

A capped fastener is provided with deflected projections on the nut body for securing a cap on the nut body. The deflected projections fit within a double walled edge of the cap. The projections are deflected through a simple method during the assembly process.

A capped fastener is provided with deflected projections on the nut body for securing a cap on the nut body. The deflected projections fit within a double walled edge of the cap. The projections are deflected through a simple method during the assembly process.