IMPROVED FRAME ATTACHMENT MEANS

摘要

The invention relates to a frame screw (1) comprising a cylinder-shaped unit (3) with a threaded outer casing (4) designed with a through-and-through channel (5; 26) in an axial direction comprising a first section (6) designed with a cross section in a radial direction suitable for fitting a rotatable tool and a flange (8) comprising an inner section (9) constituting a guidance part (9). The frame screw (1) comprises a fastening means (13) that is suitable to fit in the channel (5; 26) and the guidance part (9) and is characterized in that the guidance part (9) has a cross section D1 (D1) in a radial direction adjusted after a length (L1) of the guidance part (9) in an axial direction in such a way that the guidance part (9) limits the radial freedom of motion of an existing central axis of the fastening means (13) in relation to an existing central axis of the guidance part (9) to a motion of a predetermined range at the end surface (12) of the cylinder-shaped unit (3).