发明名称 |
Self-drilling and self-tapping screw |
摘要 |
The present invention relates to a self-drilling and thread-forming connecting element, a screw, having a threaded shank and a drilling point at the end for the chip-forming drilling of a core hole for the threaded shank. The drilling point is designed as a step drill having at least two drilling steps with different diameters.
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申请公布号 |
US6402448(B1) |
申请公布日期 |
2002.06.11 |
申请号 |
US19990419142 |
申请日期 |
1999.10.15 |
申请人 |
A-Z AUSRUESTUNG UND ZUBEHOER GMBH & CO. |
发明人 |
DICKE ROBERT |
分类号 |
F16B25/10;F16B35/04;(IPC1-7):F16B25/10 |
主分类号 |
F16B25/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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