Circlip

Internal circlip
External circlip
This diagram illustrates the removal of a snap ring from the rear hub of a bicycle, on which it is used to retain a single rear sprocket

A circlip (a portmanteau of "circle" and "clip"), also known as a C-clip, snap ring, or ',[1] is a type of fastener or retaining ring that consists of a semi-flexible metal ring with open ends that can be snapped into place into a machined groove on a dowel pin or other part to permit rotation but to prevent axial movement. There are two basic types of circlips: internal (fitted into a bore) and external (fitted over a shaft). Circlips are used to secure pinned connections.

  1. ^ Zinn, Lennard (1998). Mountain Bike Performance Handbook. Osceola, Wisconsin: Velo Press, MBI Publishing Company. p. 157. ISBN 978-0-933201-95-8.