| 摘要 |
The invention relates to the field of screws, and in particular that of threaded screws. It is often desirable for the hole into which a screw is inserted to be sealed in a fluid-tight or gas-tight manner using the screw. The prior art contains various proposals for this purpose, inter alia a screw that is able to create the seal without an interposed washer made of flexible soft material. Said screw is disclosed in patent specification DE 103 14 948. In order to render a screw of said type also suitable for use in chamfered holes, according to the invention the shank (18) between the screw head (16) and the thread, preferably directly adjacent to the screw head (16), comprises a steeply extending conical section (12), and in comparison thereto a shallowly extending transitional section (14) to the subsequently cylindrically extending shank. |
