Axially centred quarter-turn fastening device

A fastening device for fastening a part to a support, the fastening device comprising:

• a head carrying the part, the head configured to rest on a first face of the support;
• and
• a holding foot connected to the head and extending along a main axis, the holding foot configured to penetrate axially into an opening of the support, the opening having a peripheral edge, thereby placing the fastening device in an insertion position having a first angular orientation, the holding foot comprising at least one flexible retaining tab for resting on a second face of the support when the fastening device is moved angularly from the insertion position to a locking position having a second angular orientation, the flexible retaining tab carrying a lug to fill space between the holding foot and the edge of the opening and thereby refocus the fastening device in the opening when the fastening device is moved angularly from the insertion position to the locking position.