A fastening device for pedals in motor vehicles has a supporting bolt (8) which is accommodated at each of its free ends in a mounting point (5, 5A) of a pedal block (2). The bolt (8) has, between the mounting points (5, 5A), a mounting point for the pedal. The pedal mounting point is arranged in a hole (7) of the pedal body (2). The supporting bolt (8) comprises two bolt halves (9, 10), which are locked with one another in the assembled state by an elastic snap holder (11). The bolt halves (9, 10) are fixed by at least one stop (13) with respect to their position to the pedal.