I'm looking for some assistance with sourcing a spindle nut and washer for a 1958 Chevy 1 ton. When I went in to check the brakes and hub over I found one of the previous owners replaced it with the wrong nut and lost the notched washer. I have checked everywhere online and locally and can only find what I need for the 1/2 ton.

Or if somebody happens to know the size of the nut and thread I may be able to source it elsewhere. I forgot to take the measurements from the other side before handing it over to a friend who is trying to find one for me.

Thanks