Abstract: A device for the clamping attachment of spaced structural parts by a connecting screw and a distance plate arranged in the space between them, which plate is provided with ascent support surfaces opposite which there are form-fitting mating ascent support surfaces associated with the other structural part, the rotation of the support surfaces with respect to each other determining the axial distance assumed in the manner that the distance plate is carried along into the resting position by the connecting screw. In case of use the resting height (Al) is adapted to be reduced a predetermined amount by the clamping force of the connecting screw (4).