Is this it?
Tandems East Wheelsets, Rims and Hubs
Is that a disc brake hub?
What is the actual condition of the hub? Bearings? Broken Flange?
Perhaps also post the specs you are looking for.
OLD width
Flange (spoke hole) diameter
Etc.
Hmmm...
I probably have a Shimano 40h hub around here somewhere. Standard cup & cone. Not sure of the width, but it has a threaded axle which could be replaced. It has a threaded brake, but I should have the adapter.
Looking on E-Bay:
Origin 8, 40h, 135mm, Disc
https://www.ebay.com/itm/Origin-8-MT...k/264255518033
WheelMasters, 40h, 140mm., Disc
https://www.ebay.com/itm/WM-Wheel-Hu...m/302341054420