作者: Harold A. Ladouceur
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摘要: A method of attaching a self-attaching element (20), including self-piercing element, to panel (74) in die member (52). The (20) includes tubular barrel portion having free open end and may include piercing surface at the portion. coating least with fluorocarbon coating, such as polymerized tetrafluoroethylene, prior installation fastening (74). is then driven through an opening formed generally coaxially aligned center post (58). coated internal surface (34) against external (64) (58), bottom (66) concave cavity, forming channel-shaped (26a) which receives edge (78a) panel, mechanical interlock.