| 摘要 |
The invention relates to a threaded nail intended to be knocked in with blows of a hammer into materials to be assembled. This nail is characterised mainly in that the edge of its head 1 and its shank 2 are connected by a fillet of large radius 3 and in that the crests of two consecutive threads are connected by a rounded portion of large radius 7 and in that its tip 4 is pyramid-shaped. Application: assembling wooden, plastic, sheet metal, stone, brick, building block or other elements. <IMAGE>
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