发明名称 SELF-TAPPING SCREW
摘要 A self-tapping screw is disclosed. The screw having a shaft bearing at least partially a thread, which shaft defines a longitudinal axis and on whose first end a drill point with a maximum width and on whose opposing second end a head are arranged, as well as having at least one first cutting edge and having at least one second cutting edge. A recess through which the longitudinal axis passes is arranged between the two cutting edges, with the minimum axial depth of the recess corresponding to at least 0.08 times the maximum width of the drill point.
申请公布号 US2010226732(A1) 申请公布日期 2010.09.09
申请号 US20100715975 申请日期 2010.03.02
申请人 HILTI AKTIENGESELLSCHAFT 发明人 BAUMGARTNER MICHAEL;LOICHINGER ALBERT
分类号 F16B25/10 主分类号 F16B25/10
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