US Patent 9981614 Fastener clip

A fastener is provided for mounting a first structure having an insertion rib with a retention slot to a second structure having a mounting opening. The fastener includes a U-shaped body having a bight portion at an upper portion thereof with a pair of outer legs depending therefrom. Each of the pair of outer legs terminates at a distal free end to engage an edge of the mounting opening when the U-shaped body penetrates the mounting opening. A pair of inner legs extends from the distal free ends of the outer legs toward the bight portion. The pair of inner legs has an intermediate protrusion configured to engage the insertion rib and bear against a stop in the retention slot to retain the U-shaped body on the first structure.