A structural component for a motor vehicle which is mountable in the front or rear region of the vehicle. A first equation is obtained by measuring the free charge carrier concentration of the sample at low temperature, and in then confronting these measurements with a mathematical model suitable for these temperatures. The connector includes a insulative base and a plurality of contacts extending from the insulative base and being soldered to the circuit board at one end thereof. 2 or the thread grooves of the spindle nut and of the spindle in each case having a gothic profile, a pressure angle formed by the balls in contact with the gothic profile ranging from 15 to 35 degrees.