Screw for joining thin workpieces
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 26, 2000
Grant Date -
N/A
app pub date -
Nov 1, 1999
filing date -
May 2, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A screw comprises a shank (2) and a head provided with a tool drive (6). The shank is provided with a thread (4), and at its free end has a boring part (5). The head (3), measured in axial direction of the screw (1), has a height (LK), which is smaller than the pitch (S) of the thread (4) formed on the shank (2). An external tool drive (6) is formed on the head (3).
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