Method for producing a gear shaft, gear shaft for an electrically operated brake booster and brake booster

A gear shaft for an electromechanical brake booster, comprising:

• a force transmission element having a gearing end for tapping off a drive torque, wherein a gearing is integrally formed on the gearing end, and
• a gearwheel for imparting an output torque, wherein the gear shaft comprises a positioning and fastening device for the gearwheel, which positioning and fastening device is formed in one piece with the force transmission element on a portion of the force transmission element and includes at least one rib,
• wherein the gear shaft has a removable and/or separately manufactured axial positioning device positioned about the gear shaft for fixing a position of the gear shaft in the electromechanical brake booster with respect to a drive side, wherein, a fastening aid for the axial positioning device is provided, which fastening aid is formed in one piece on an outside surface of the force transmission element.