WTB:Metal cup trunk fiberboard hold down.

The black painted metal bowl with a hole in center to accept a threaded rod which holds down the trunk fiberboard.If you had the original small wingnut that secures the bowl I would buy that also. Thanks. (I do not need the trunk fiberboard) In the 70s I think this part turned to plastic,with a threaded hole in the center which negated the need for the wingnut.If you had that I would be fine with it.