| 摘要 |
A self-drilling rivet for joining two substrate layers has a hollow sleeve member having a circular cylindrical outer surface, a divergently tapered bore, and an outwardly expandable portion. An internal member has a head portion, a threaded shaft centered within the bore, and a drilling tip extending from the threaded shaft. A wedge member interactive with the threaded shaft can be urged by turning force toward the head portion, whereby retaining wings form from the expandable portion, and are brought to bear against one of the substrate layers.
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