公开(公告)号：US20180355903A1

公开(公告)日：2018-12-13

申请号：US15775472

申请日：2016-11-08

申请人： Arnold Umformtechink GmbH & Co. KG

发明人： Georg Vogel ,  Jan Büchle

IPC分类号： F16B25/00 ,  F16B25/10

CPC分类号： F16B25/0021 ,  F16B25/0057 ,  F16B25/0078 ,  F16B25/0084 ,  F16B25/106

摘要： A thread-forming screw which is provided in particular for thin, perforated sheet metal contains a threaded shank which below the screw head is initially configured so as to be cylindrical and then continues to a conical forming portion. The screw shank within the forming portion has a rib forming an incomplete counter thread.