Patent ID: 8480245

Claim:
An exterior rearview mirror for a vehicle having a front door, the front door having an outer panel with an opening formed therein and an inner reinforcement, the inner reinforcement having a through hole and an alternating array of protruding and recessed surface regions defining segments of a circle substantially concentric with the through hole, alignment surfaces extending obliquely between each of the protruding surface regions and the recessed surface regions adjacent thereto, said mirror having an inner supporting part with an end region configured to be guided through the opening in the outer panel, the end region having an internally threaded holder and an alternating array of protruding and recessed surface regions defining segments of a circle substantially concentric with the internally threaded holder, alignment surfaces extending obliquely between each of the protruding surface regions of the end region and the recessed surface regions adjacent thereto so that the protruding and recessed surface regions of the end region nest with the recessed and protruding surface regions of the inner reinforcement so that the through hole aligns with the internally threaded holder, and a central fastening screw passing through the through hole in the inner reinforcement and being threadedly engaged in the internally threaded holder for holding the mirror on the door.