Abstract: A blind rivet fastener for an electrical contact assembly includes a rivet shaft and a rivet head. The rivet shaft includes an elongated, hollow sleeve extending coaxially to a longitudinal center axis of the blind rivet fastener and having an outer sleeve surface. The rivet head extends radially at a first end of the sleeve. The rivet shaft includes at least one ridge configured to scratch at least one component to which the blind rivet fastener is configured to attach. The at least one ridge projects from the rivet head and extends along a portion of the outer sleeve surface. A fastening arrangement includes such a blind rivet fastener.

Abstract: The present invention relates to a blind rivet nut allowing an easy automated setting comprising a head forming a flange, a shank comprising a head end, a foot end and a cylindrical bore extending along a longitudinal axis (X) from the head end to the foot end, the bore having a first bore segment near the foot end and a second bore segment near the head end, the wall surrounding the second bore segment forming a deformable region of the shank and having an external wall diameter, the foot end having a foot end diameter, wherein the foot end of the shank comprises a tapered chamfer making a foot end angle of 21 to 25 degrees with the longitudinal axis (X), and wherein the ratio of the foot end diameter to the external wall diameter is between 0.65 and 0.82.