Engineering:Lockring

Short description: Threaded washer used to prevent components from becoming loose during rotation

For the Bronze Age jewellery, see Lock ring.

Not to be confused with Lokring.

Locking washers, size M4

A lock ring is a threaded washer used to prevent components from becoming loose during rotation. They are found on an adjustable bottom bracket and a track hub of a bicycle.

See also

• Agitator (device)
• List of bicycle parts
• Ratchet (device)
• Tine (structural)