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Title: Fastening element
Abstract: A fastening element has a head (14), a stem (11) adjoining the head 914) and having a tip at its end remote from the head (14), a first bullet-shaped section (21) extending from the tip (13) in a direction of the head (14), and a thread profile (15) provided on the stem (11) and having, on the second section (22), a constant steep gradient with a lead angle (.beta..sub.2) from 50.degree. to 74.degree. and, on the first section (21), a gradient that increases from the lead angle (.beta..sub.2) of the second section (22) toward the tip (13), with a lead angle (.beta..sub.1) at a half of a length between the tip (13) and the end (24) of the first section (21) remote from the tip (13) amounting to at least 75.degree..
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