Starlock Washers - Uncapped
Star-Lock washers are a brand name of a push-on fastener manufactured for the purpose of gripping onto round shafts. Once pushed on to the shaft, they grip immediately. Once secured, Star-Lock washers are almost impossible to remove without damaging and probably destroying them.
They are commonly used on the axles of prams and pushchairs to prevent the wheels from working loose.
The washers in the section are uncapped. If required, capped Star-Lock washers are available which feature a push-on cap that hides the internal serrated section of the washer.