Abstract: A fastener includes a fastener body having a pair of legs. A shoulder portion causes the legs to be elastically engaged with inner edges of a mounting aperture when the fastener is inserted into the mounting aperture. A gripper portion includes a pair of gripper arms that interpose an insertion rib between a pair of opposite gripper surfaces of the pair of gripper arms when the fastener is fitted to the insertion rib. An engagement projection is formed on any one of the pair of gripper surfaces and extends from one of the pair of gripper surfaces to a height exceeding half of the distance between the pair of gripper surfaces so as to engage with an engagement slot formed on the insertion rib.

Abstract: Disclosed is a fastener, which is for 100 removably mounting a mounting object with an insertion rib through a mounting aperture formed on a panel.