Abstract: A device for assembling a steering column bracket with a steering gear shaft, comprising a clamping bolt cooperating with a clamping nut disposed in one of two branches of the bracket, the clamping nut being held in place against rotation and translation by an antirotation elastic member and having a radial protrusion. An axial prepositioning abutment is fastened to the bracket. When the radial protrusion of the clamping nut is pressed against the axial prepositioning abutment, the clamping nut is partly withdrawn along its axis to allow the bracket to be engaged over the end of the shaft. At the end of tightening the clamping bolt in the clamping nut, the clamping bolt neutralizes the antirotation function of the antirotation elastic member in order to allow the clamping nut to escape from the axial prepositioning abutment and immobilize the bracket on the shaft.