Patent ID: 8919717

Claim:
A fastening device for fastening an attachment part to a support part, said fastening device comprising: at least one elongated fastening element having a detent structure and extending along a longitudinal direction; a base part including a receiving sleeve extending along said longitudinal direction; a cover part including a covering region covering said receiving sleeve; a plurality of resilient rear engaging tongues extending radially inwardly toward, and spaced peripherally about, said elongated fastening element; at least two equalizing elements separate from said cover part and from said base part and disposed within said receiving sleeve, said equalizing elements movable along said longitudinal direction from an equalizing position of retraction in which said equalizing elements are received within said receiving sleeve to reduce a cross section of said fastening device, to an extended offset position, said extended offset position axially displaced from said equalizing position along said longitudinal direction; and said equalizing elements disposed one inside the other in said equalizing position of retraction, and wherein each said equalizing element is a hollow, cylindrical equalizing sleeve.