Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Threaded washer used to prevent components from becoming loose during rotation
For the Bronze Age jewellery, see Lock ring.
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.
Lokring is another form of fastener used in the automotive and air condition industries: these fittings are often confused with lockrings.
See also
The dictionary definition of lockring at Wiktionary