Abstract: A mounting spindle with a thread that is formed adapted to the thread-protecting element, formed as a helical wire, serves as a mounting tool with the mounting method. The helical wire is fixed on the mounting spindle by frictional engagement, which is greater than the torque necessary for mounting the helical wire into the receiving threads. The mounting spindle with the helical wire fixed thereon is then threaded into the receiving threads. Then, the mounting spindle is removed from the helical wire by rotation opposite to the mounting direction. The frictional force is achieved by a reduced-diameter end section of the helical wire.