Screw drive

A kit comprising:

• a screw comprising a screw head bush and the screw head bush has an external portion and an internal portion following the external portion;
• and
• a screw head drive having an external portion and an internal portion following the external portion;
• wherein:
• the external portion of the screw head bush has a larger diameter than the internal portion of the screw head bush at least in a first axis oriented perpendicular to a depth of the screw head bush, and
• the external portion of the screw head bush is configured as a truncated cone tapering towards the internal portion of the screw head bush and the internal portion of the screw head bush is configured as engagement geometry
• for a rotationally fixed accommodation of the screw head drive;
• and
• wherein:
• the internal portion of the screw head drive has a larger diameter than the external portion of the screw head drive in at least a first axis oriented perpendicular to a height of the screw head drive,
• the internal portion of the screw head drive is configured as a truncated cone tapering towards the external portion of the screw head drive,
• the external portion of the screw head drive comprises a contact geometry,
• the contact geometry is configured to engage the engagement geometry of the screw head bush in a rotationally fixed manner, and
• the internal portion of the screw head drive has a larger inclination angle than a truncated cone shell of the external portion of the screw head bush of the screw in regard to a cylinder shell.