Can someone please identify this non-standard fastener/nut with flange. The thread is 10mm (it fits a 10mm threaded rod) and the diameter of the flange is 20mm.
The thread pitch is 1mm if that helps to identify it.
I need to find another one of these to repair a lamp with a pottery base that has a 10mm threaded rod that is missing this piece. I have an identical lamp from which this fastener/nut was taken to photograph it.
Here is the nut fastened to the threaded rod from the other lamp to show how it is used. The flange is used to attach to the underside of the lamp base.
I just need to find the name of this fastener/nut or where to buy it. Many thanks!