Patent ID: 7213304

Claim:
A fastener having an insertion axis, the fastener being configured to be inserted into an aperture in a structure along the insertion axis, the fastener comprising: a flange; a body coupled to the flange, the body having a first generally U-shaped portion and a second generally U-shaped portion, the first and second generally U-shaped portions being disposed on opposite sides of the insertion axis; and a first wing member and a second wing member coupled to the first generally U-shaped portion, each of the first and second wing members having a warped planar shape with a first end that is coupled to the first generally U-shaped portion and a second free end opposite the first end, the second end terminating at a distal edge surface, the distal edge surface being sloped relative to the flange in a vertical direction that is generally parallel to the insertion axis so that a first lateral side of the distal edge surface is relatively closer to the flange in a vertical direction than a second opposite lateral side of the distal edge surface.