CLINCH STUD
专利名称：CLINCH STUD 发明人：STEINER J,US 申请号：US3782436D
申请日：19720721
公开号：US3782436A
公开日：
新农村建设标语
19740101
单眼皮怎么变双眼皮专利内容由知识产权出版社提供
我国有几个省级行政区
摘要：A self-clinching stud has a head and a threaded shank adapted to be secured in sheet material. In the locality integrally adjoining the head and shank, stepped concave lands alternate circumferentially with convex unstepped lands. This configuration produces a flow in sheet metal, when the stud is pressed into a hole having a diameter about equal to the shank diameter and less than that of the lands, that holds the stud against unscrewing as well as axial pull out.
申请人：STEINER J,US腊月打雷的说法
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