Fastening elements to be driven into hard receiving materials
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United States of America Patent
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Mar 24, 1998
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N/A
app pub date -
Nov 1, 1996
filing date -
Nov 17, 1995
priority date (Note) -
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Abstract
A fastening element such as a bolt, nail and the like to be driven into a receiving material, is formed of a high corrosion resistant steel. The fastening element has an axially extending leading region (1) to be driven into the receiving material and trailing region (2) with the two regions forming a single monolithic member. The diameter of the trailing region (2) is greater than that of the leading region (1) and has a hardness in the range of 35-43 Rockwell C hardness while the leading region has a hardness in the range of 46-55 Rockwell C hardness.
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