| 摘要 |
1. A fastening element with locking to prevent undesired loosening in the form of a bolt (5), nut (14) or flat washer (11) with a surface (8) which bears against a workpiece surface (2) or another fastening element with bearing pressure and which extends at right angles to the median axis thereof, for producing a screw connexion which can be acted upon by transverse forces on the fastened part, there being formed on at least one surface (8) of the fastening element (5; 14; 11), which bears on a workpiece (2) or another fastening element, at least one arcuate bead (7) which extends concentrically to the median axis of the fastening element and which projects from the otherwise flat abutment surface (8), characterized in that the bead (7) forms an arc of uniform diameter which extends - at the most with slight interruptions - over the entire periphery. |
