Fastening element and decoupling assembly

A component made of a thermoplastic, which is configured to be assembled with a second identical component and a decoupling element made of an elastomer to form a decoupling assembly for an add-on part of a motor vehicle connected to a body structure, comprising

• i) a base plate including a central opening,
• ii) at least two identically shaped cylinder wall segments arranged equidistantly from one another on the upper side of the base plate on a circular line coaxial with the center of the opening, the side of which facing the opening has in each case at least one spring element which is configured to engage in thread flanks of the threaded bolt when a threaded bolt is introduced into the opening,
• wherein the length of the circular arc between two cylinder wall segments is at least as great as the length of an upper edge of a cylinder wall segment, and
• wherein each of the cylinder wall segments includes a detent lug on its upper edge, which lug is configured to engage in a corresponding recess of the second identical component and to lock the two com-ponents together, and
• iii) recesses arranged in each case between two cylinder wall segments.