Fastening element for insertion into an opening of a vehicle body part and method for assembly of such a fastening element

A fastening element for insertion into an opening of a part, wherein the fastening element has a head region, a flange region, which is either a bottom part of the head region, or which is spaced from the head region and connected to the head region via a first shaft region, and a second shaft region, which continues from the flange region on a side opposite the head region and is formed such that, in an inserted state of the fastening element in the opening, the second shaft region extends through the opening, at least in certain regions, and forms a snap connection with the part, wherein at least one indicator element is associated with the fastening element for acoustically signaling an assembly state of the fastening element with the part in order to assist in achieving the snap connection between fastening element and the part;

• wherein the at least one indicator element is designed as an element which protrudes radially from the fastening element, at least in certain regions, and which is connected to the flange region or first shaft region of the fastening element via at least one joint region such that, during assembly of the fastening element into or in the opening, the indicator element is pressed through a boundary or edge region of the opening relative to the flange region and/or relative to the first shaft region contrary to an insertion direction of the fastening element.