part 20 and the threaded part 30 are embodied as separate parts each respectively provided with one coupling element 25 fig3 and 4 and or 55 fig7 and 9 the coupling elements 25 55 can be connected in an articulate fashion by way of being plugged together so that a mutual radial off set v develops fig1 or a mutual incline a fig1 of the longitudinal axes a b of the drive part 20 and or the threaded part 30 can be compensated shearing forces can be absorbed by the agility or joint motion possible by the drive part 20 and the threaded part 30 in the plugged together state so that any mutual radial off set v or inclination a can be compensated which is described in greater detail in the following if the drive part 20 and the threaded part 30 were arranged precisely aligned coaxially their mutual radial off set v would be zero the same applied for the inclination a if the drive part 20 and the threaded part 30 were arranged precisely collinearly the coupling elements 25 55 are each embodied similar to keyway gears in the plugged together state of the drive part 20 and the threaded part 30 both gears comb each other in order for the drive part 20 and the threaded part to engage each other a grid is provided for several plugging positions the drive part 20 and the threaded part 30 can also be plugged together in different radially off set positions the coupling elements 25 55 are designed with little mutual play the coupling element 25 of the drive part 20 comprises a circlip 61 for loss prevention the drive part 20 has a groove 40.