A resilient clip for engaging a structure and having a body portion with a pair of top flanges and a pair of abutting coupling flanges. Each of the abutting flanges has an engagement surface and an engagement member, which engages the mounting structure. The elastic abutting flanges also have a base portion and a transition portion. A ramped surface of the engagement feature extends above the base portion. A substantially flat peripheral surface of the engagement feature in the transition portion is adapted to engage the panel to provide resistance to removal of the fastener from the mounting aperture. To manufacture a clip, a punch is used to apply a force to displace material of the elastic abutting flange portion into a die cavity to form the engagement. The elastic abutting flange portion is bent at a location passing through the engagement feature.