Arrangement of screw head and component to be fixed, comprising specifically curved outer surfaces

摘要

The arrangement is assembled of a component (2) of a vehicle or other object and a screw (1) with a contact area (10) for a tool. The two parts (1, 2) are in contact with their curved outer surfaces (11, 11a, 12, 12a) which are parts of circles with slightly different radii (R1, R2). The contact area (11a) at the screw head (4) has a curvature of a radius (R1) bigger than zero and the contact area (12a) at the component (2) has a curvature of a radius (R2) bigger than zero but smaller or equal to infinity. The centers of the curvatures (A, B1, B2) are positioned in a right angle to the longitudinal axis (X-X).