Self tapping screw

申请公布号：AU743064(B2)

申请号：AU19980091567

申请日期：1998.07.28

申请公布日期：2002.01.17

申请人：

EJOT VERBINDUNGSTECHNIK GMBH & CO. KG

发明人：HERMANN GROSSBERNDT;GOTTFRIED KONIG

分类号：F16B25/00;F16B33/02;(IPC1-7):F16B25/04

主分类号：F16B25/00

摘要：PCT No. PCT/EP98/04719 Sec. 371 Date Jun. 14, 1999 Sec. 102(e) Date Jun. 14, 1999 PCT Filed Jul. 28, 1998 PCT Pub. No. WO99/06715 PCT Pub. Date Feb. 11, 1999A cold-rolled screw which is intended for screwing into plastic has a narrow self-tapping thread with an inflection on at least one side of the thread so that the inner flank angle is smaller than the outer flank angle but still approximately equal to or larger than one third of the outer flank angle. In a second aspect, the screw thread has a end surface spaced from the free end of the screw to guide the plastic displaced by the thread during threading of the screw.

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