There's a fairly common style of small internal circlip which has three inward-facing lobes, so that it works as a washer as well as a circlip, but I don't know what these are called.
I've got a spring-loaded centre punch, nothing expensive, whose circlip has fractured, and if I knew where to buy a replacment it might just possibly be worth while.
Anyone know the correct description, and/or where to buy just a few?