SCREW FOR FIXING THE DISTANCE OF COVERING PLATES OR RAILS IN A SUBSTRUCTURE
The screw to fix the distance of covering plates in a substructure is provided with two shank sections (9, 10) having threaded areas (11, 12) with different diameters. A stop-like section is formed below the screw head (14) and in a transition (15) between the two shank sections (9, 10). The unthreaded areas (16, 17) match the thickness of the covering plates to be fixed and the plain and sealing washers (18) used as well as the thickness of the substructure. A drilling part (19) is configured in the free end of the screw (1).