On 19/03/2013 15:29, Georg von Krapp wrote:
"Jim K" wrote in message
...
Like a thin washer with serrated inner diameter that you push over a shaft
to retain something on it. From memory they are dished slightly on one
face (the side that goes on first) so that the serrated bits bite into the
shaft material.

Starlock ?

Yes that's the monkey

--
David