Abstract: A fastener clip includes a base plate and a pair of laterally offset arms extending from the base plate. The fastener clip is operative for insertion into a hole (slot) defined in a first engagement structure, such as a vehicle chassis. At least four wings extend from the arms. Each wing includes at least one engagement portion including a depressed portion formed on each wing, wherein each depressed portion is operative to engage a portion of the hole. According to one embodiment, each arm is coupled to at least one wing at a distal end of each arm (i.e., a long arm), so that each wing extends inwardly towards the base plate. According to an alternative embodiment, each arm (i.e., a short arm) is coupled to the at least one wing, so that each wing extends outwardly away from the base plate.

Abstract: A spring fastener, which comprises two engagement springs in opposite sides of the fastener. Each engagement spring has an engagement portion comprising a hindrance portion, which increases considerably the removal to insertion force ratio as compared to such ratio when the engagement portion does not have the hindrance portion, thus permitting very easy insertion into, with considerably more difficult removal of the fastener from the slot of a panel.