| 摘要 |
1. Screw for securing metal and/or plastic sections or plates on a substructure comprising a shaft with a boring section and a threaded section, as well as with a screw head section, characterized in that a section (6) of said shaft (2) adjacent to the screw head is conically tapered towards the screw head and that the diameter (DK) of said conical section of said shaft adjacent to the screw head is greater than the diameter of the bored hole (14) in section (10) to be secured, into which a screw (1) is inserted, and therefore is also greater than the diameter (DB) of said boring section (4). 2. Screw of Claim 1, characterized in that said conical section (6) of said shaft (2) is directed towards to the section to apply force or towards to the bottom side (7) of the section to apply force made as said screw head (3) 3. Screw of Claim 1, characterized in that the diameter (DK) of said conical section of said shaft adjacent to the screw head is greater than the outer diameter (DG) of the threaded section (5) of said shaft (2). 4. Screw of Claim 1, characterized in that said screw head (3) has bosses (8) and/or recesses (9) on its bottom side (7). |
