Bayonet clips are retaining elements for axles, bolts and shafts with groove. They are clipped to the bolt with the tongue facing upwards and therefore prevent the unwanted loosening of the bolt in the axial direction.
It should be noted that this type of retainer is suitable only for a certain distance (= dimension "n") between the groove and the end of the shaft. The tongue, which gives the bayonet its name, is tensioned and cannot therefore simply be pushed to any desired depth.
Bayonet clips can be disassembled again.