A fastening system for mounting detachable covering components, like panels, on other components (17), like carriage parts (19), has at least one spacer (1) with a spacer body (3). One spacer body side can be attached to the covering component. The opposite side has an adhesive closure part (7) detachably engaged with a corresponding adhesive closure part (16) attached to the other component (17). At least on one border of the side of the spacer body (3) connected to the covering component, a flat mesh (21) abuts to enlarge the connection area between the covering component and the spacer (1).