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Self-attaching fastener

  • US 4,915,558 A
  • Filed: 05/19/1988
  • Issued: 04/10/1990
  • Est. Priority Date: 02/02/1980
  • Status: Expired due to Term
First Claim
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1. A metal self-piercing and riveting member for attachment to a panel, said member having a body portion and a self-piercing and riveting annular wall having a diameter less than said body portion extending from said body portion, said annular wall having an outer surface and a generally smooth inner surface terminating in an outwardly angled annular conical piercing face adjacent the free end of said annular wall for piercing a slug from the panel having a diameter greater than the internal diameter of said annular wall inner surface, said annular wall inner surface terminating in a bottom wall defining a socket opening through said annular wall free end for receipt of the panel slug, and said annular wall free end joining said outer surface in a radius for deforming said panel into a die opening.

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