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A holding element for fastening in a hole of a carrier part has a central shaft extending along a longitudinal axis, a supporting part fastened to the far end of the shaft and projecting laterally, and at least one arm, a fastening end of which is fastened movable to the shaft. The arm extends trans

A holding element for fastening in a hole of a carrier part has a central shaft extending along a longitudinal axis, a supporting part fastened to the far end of the shaft and projecting laterally, and at least one arm, a fastening end of which is fastened movable to the shaft. The arm extends transverse to the longitudinal axis and for some distance from the shaft and in a direction parallel to the longitudinal axis is supportable on the supporting part and in the opposite direction is supportable on a guide part fastened to the front end of the shaft.

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1. A holding element for fastening in a hole, the holding element comprising: a central shaft having a far end and a free end, the central shaft extending along a longitudinal axis between the far end and the free end,multiple supporting parts located at the far end of the shaft, the supporting part

1. A holding element for fastening in a hole, the holding element comprising: a central shaft having a far end and a free end, the central shaft extending along a longitudinal axis between the far end and the free end,multiple supporting parts located at the far end of the shaft, the supporting parts located centrally on either side of the shaft and extending transverse to a central plane of the shaft, andmultiple arms each including a distal end and a proximate end and a radially outward peripheral edge surface extending from the proximate end to the distal end and defining a first arc length, each arm flexibly fastened to the shaft at the proximate end by an integral joint defining a second arc length substantially less than the first arc length,wherein the arms each extends transverse to the longitudinal axis for a distance from the shaft and the integral joints fastening the arms to the shaft individually define elastically bendable crosspieces arranged on opposite sides of the shaft at lateral edges of the shaft; andwherein each arm includes on a front a flat front surface and an inclined and curved ramp surface and on a back a flat back surface parallel to the front surface, the arm being limited by an edge surface convexly curved radially outward with reference to the longitudinal axis which is smoothly converted into the outer surface of the crosspiece, and a supporting surface defining an end of the inclined and curved ramp surface extending freely away from the crosspiece and facing the shaft transverse to the longitudinal axis such that the supporting surface contacts the shaft to limit a movement of the arm toward the shaft. 2. The holding element of claim 1, wherein the holding element further comprises a guide part fastened to the free end of the shaft. 3. The holding element of claim 2, wherein the guide part has the shape of a truncated cone and tapers in a direction away from the supporting part. 4. The holding element of claim 3, wherein each of the arms is also supported by the guide part. 5. The holding element of claim 1, wherein each of the arms has the front turned toward the free end, and the arm inclined and curved ramp surface extends along a curved outer contour. 6. The holding element of claim 5, wherein on a back turned toward the supporting part, each of the arms has the flat back surface is aligned substantially perpendicular to the longitudinal axis of the shaft. 7. The holding element of claim 6, wherein the shaft has the form of a substantially rectangular plate including a short side and a long side and the joint of the arm is located on the short side. 8. The holding element of claim 7, wherein each of the arms has on at least one of the front and the back a raised stop cam, by which it is supportable on the adjacent surface of the guide part, the supporting part or a second arm. 9. The holding element of claim 8, wherein the guide part has the form of a truncated cone, the diameter of which decreases with distance from the shaft, while the inclined ramp surface of each of the arms adjacent to the guide part is arranged so that in the relaxed state of the arm its inner edge adjoins the edge of the greatest diameter of the guide part. 10. The holding element of claim 9, further comprising a fastening element located proximate to the far end of the shaft. 11. The holding element of claim 10, wherein the fastening element comprises one of a cable hanger, a cable strap, a piping strap and a holding plate, for fastening a cover part. 12. The holding element of claim 11, wherein one of a springy abutting element and a sealing element is located at the far end of the shaft. 13. The holding element of claim 1 wherein the distal end and the proximate end of each of the arms lie in a plane perpendicular to the longitudinal axis. 14. The holding element of claim 13 wherein the arm further includes a radially inward edge opposed to the shaft, and the shaft, the joint, and the inward edge partially define a gap, and the gap includes a radial opening between the distal end of the arm and the shaft. 15. The holding element of claim 1, wherein each of the arms includes: the flat back surface located at a first axial distance from the far end and facing the supporting part and extending a first radial distance from the shaft;the flat front surface located at a second axial distance from the far end greater than the first axial distance, the front surface facing away from the far end and extending a second radial distance from the shaft less than the first radial distance; andthe ramp surface extending axially and radially between the back surface and the front surface, the ramp surface increasing radially from the front surface to the back surface. 16. The holding element of claim 15, wherein the ramp surface defines a pitch and the pitch varies circumferentially around the ramp surface between the proximate end and the distal end. 17. A holding element for insertion into and retention in a hole, the holding element comprising: a central shaft extending along a longitudinal axis from a first end to a second end;multiple supporting parts fastened to the first end of the shaft, the supporting parts located centrally on either side of the shaft and extending transverse to a central plane of the shaft;a guide part fastened to the second end of the shaft,multiple arms located between each of the support parts and the guide part and extending transverse to the longitudinal axis of the shaft, the arms each including a first end flexibly fastened to the shaft, a second end distal to the shaft, and a ramp surface that is both inclined and curved; andwherein the second end of the each of the arms is movable in a plane perpendicular to the longitudinal axis of the shaft; andwherein each of the arms includes a supporting surface defining an end of the inclined and curved ramp surface extending freely away from a crosspiece and facing the shaft perpendicular to the longitudinal axis, on a front a flat front surface and the inclined and curved ramp surface and on a back a flat back surface parallel to the front surface, the arms each being limited by an edge surface convexly curved radially outward with reference to the longitudinal axis which is smoothly converted into the outer surface of the crosspiece such that the supporting surface contacts the shaft during movement of the second end in the plane perpendicular to the longitudinal axis to limit a movement of each of the arms toward the shaft.