75pcs stainless steel nylon insert locknut assortment kit m2 m2.5 m3 m4 m5 m6 m8 m10

these lock nuts are made of stainless steel for durability. nylon insert lock nuts have a undersized nylon washer that creates friction with the mating threads to prevent loosening. there are many different sizes of lock nut that you can use for different bolts. they can prevent vibration from loosening a bolted joint,resist loosening under vibrations to provide a locking action. these lock nuts are amazing replacement for normal nuts of hardware, vehicles, home or outside applications..syi