correspondingly the contact surfaces 11 of the spring elements 10 project by the same distance x over the outer surface of the outer disk 7 as will be explained below the spring elements 10 are used to offset the play inside the receiving pocket in this regard the height of the recesses 13 a 13 b can also be sued to flexibly offset the expected location deviations fig3 shows a front wall that separates the engine compartment 18 of a motor vehicle not shown from the passenger compartment 17 the attachment element 1 is used to clamp the sound insulation 19 between the inner disk 9 of the attachment element 1 and the front wall 16 an instrument panel 20 shown only in a sectional view has a u shaped pocket 21 which is moved in the direction of the arrow p 1 during assembly the outer disk 7 moves into the pocket 21 in the process thereby securing the instrument panel 20 in a vertical direction as shown on fig3 a single attachment element 1 can be used to secure both the sound insulation 19 and the instrument panel 20 to the front wall 16 assembly can here be.