and above the lower edges 54 of the slot 42 therefore upon disassembling the assembly the fastener 10 may be easily removed from the slot the operation of this embodiment is for all practical purposes identical to the operation of the previous embodiment of the present invention in still a different embodiment better illustrated in fig5 and 6 the barbs 36 have an origin 38 at the side neck portion 22 or the side leg portion 32 the barbs 36 are initially directed outwardly away from the legs 24 and then inwardly toward the legs 24 and the neck 18 the operation of this embodiment is similar to the operation of the previous embodiments with the difference that when the fastener 10 is being inserted into the slot 42 the outwardly directed portions of the barb 36 are initially squeezed and finally the inwardly directed portions of the barbs 36 find themselves pushing against the lower edges 50 of the slot 42 thus engaging the fastener 10 on the first part 44 through the slot 42 when the second part 56 see fig4 is secured on the fastener 10 and the first part 44 as already described in the earlier embodiments the barbs 36 are tilted and assume a position as illustrated in fig7 and further support the attachment of the second object onto the first object of course the degree of tilting may vary and what is shown in fig7 is just an example the angle a fig6 is preferably larger than 90 degrees in any event it should preferably be such that the fastener can be removed.