the main axis a of the fastener ring 1 a and the central axis b of the rod 201 a substantially coincide when dimensional dispersions are greater the rod 201 a can be in any of the positions shown in fig4 b to 4e or in any other position in which the main axis a of the fastener ring 1 a and the central axis b of the rod 201 a do not coincide in the configuration shown in fig4 b the rod 201 a is in contact with one star shaped tab 4 and with two second additional tabs 6 that co operate to hold it in the configuration shown in fig4 c the rod 201 a is in contact with one star shaped tab 4 and with one second additional tab 6 in the configurations shown in fig4 d and 4e the rod 201 a is in contact with two star shaped tabs 4 with one first additional tab 5 and with one second additional tab 6 the invention makes it possible to achieve the above mentioned objectives the fastener ring 1 a 1 b of the invention makes it possible to take up large dimensional disparities in the support and or in the part for fastening by way of indication a fastener ring 1 a 1 b in which the dimensions of its body 2 a 2 b are approximately in the range 25 millimeters mm to 30 mm can thus accommodate an offset of 7 mm.