| 摘要 |
<p>The invention relates to a screw portion for theft-protected fastening of a rim of a motor vehicle comprising a) a head (20) comprising an encrypted drive surface (22) for introduction of a torque, b) an annular body (36) surrounding the head (20) and having an outer surface, wherein an inner notch (40) is provided in the annular body (36) and an opposite outer notch (30) is provided in the head (20) and c) a non-circular spring washer (42) that is disposed between the head (20) and the annular body (36), engages with the inner notch (40) and the outer notch (30) and comprises outer areas (44) that engage with the inner notch (40). It is characterized in that the spring washer (42) is wavy and comprises inner areas (46), that the inner areas (46) engage in the outer notch (30), that a peripheral mounting bevel (38) is provided at the annular body (36) and/or at the head (20), and that the mounting bevel (38) is located in front of the respective notch (30, 40) in the mounting direction.</p> |
