lockring

A textured or threaded washer used to prevent components from become loose during rotation. On bicycles they are found, for example, on a bottom bracket and a track hub.

Noun

  1. A textured or threaded washer used to prevent components from become loose during rotation. On bicycles they are found, for example, on a bottom bracket and a track hub.
  2. A ring (usually of steel) that is part of a wheelrim on some types of heavy equipment; it locks down the tire's mounting.
  3. Any of various types of jewellery or components thereof, such as rings with a locking feature or rings that lock a chain closed.

Origin

From lock + ring.

Forms

lockrings lock ring