Will this one work?
https://www.ebay.com/itm/NOS-GM-473629-Rear-Wheel-Hub-Nut-Lock-Washers-1936-1952-85-02-Chevrolet-Truck/114621878356?epid=671672284&hash=item1aafff1054:g:YF8AAOSwsm5f-gnL


1941 Chevy 1 1/2-ton WW2 4x4 dump truck
In the Stovebolt Gallery
Lots more pictures