Self-drilling screw
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United States of America Patent
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Issued Date -
Jun 14, 2007
app pub date -
Dec 8, 2005
filing date -
Dec 8, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A self-drilling screw includes a head and a shank having a drilling point defined at the distal end thereof; said drilling point further includes a first drilling section adjoining the threaded portion and a second drilling section adjoining the first drilling section. Two cut grooves are defined on the second drilling section and communicating with the first drilling section. Due to the two drilling sections, the making drill point dies are less damaged when shaping merely one section of drilling point. Besides, the smooth surface of the first drilling section provides space to put a trademark.
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