| 摘要 |
Rotationally symmetric self-pierce rivet ( 10 ) having a rivet head ( 14 ) and a rivet shank ( 12 ) provided with a centrical recess ( 16 ) closed by the rivet head ( 14 ), wherein the rivet shank ( 12 ) is having an outer contour which generally is following the course of an ellipse ( 18 ) externally lined up against the rivet shank the major axis (A) thereof basically extending parallel to the axis of the rivet ( 10 ).
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