| 摘要 |
<p>The aim of the invention is to improve a closing element (100, 101) for a fuel tank, such that said element may be screwed tight to the fuel tank, without any danger of overtightening. Said closing element (100, 101) comprises a thread (14) and at least two tightening pressure surfaces (10, 20), arranged on, by, or in the head (13) of the closing element, upon which a force can be exercised by a tool, to generate the torque to drive the thread. The aim of the invention is achieved, in that overtightening is avoided, or reduced, by an appendix on the tool, whereby the normal to the surface (17) of the tightening pressure surfaces (10) comprises a component, opposed to the drive direction (18) of the thread (14).</p> |
