A circlip or snap ring is a type of fastener consisting of a semi-flexible metal ring with open ends which can be snapped into place, into a machined groove on a dowel pin or other part to permit rotation but to prevent lateral movement.
This one is used for fastening the wrist pin in place in a piston on vintage Vespa V5A scooters.
- Applies to the following models:
- Vespa - Vintage
- V5A/B Vespa 50