A screwing tool for an impact wrench for screwing wheel nuts onto and off from a hub body for securing a vehicle wheel, having a main body, which has an open side oriented toward the wheel nuts and which includes a hollow profile. The hollow profile has a tool contour, which is arranged on the open side and can be brought into engagement with a wheel nut contour. At least one peripheral control edge is remote from the open side for releasing a retention element. The control edge has a circular arc region with a constant control edge height h.sub.1 and a cam region with a control edge height h.sub.2 that decreases continuously and then increases again continuously. Height h.sub.1 is equal to h.sub.2 in the respective transition of the circular arc region and the cam region, such that the geometrical shape of an oval is reproduced in cross section.