This is the latest copy that I have and it mirrors what the member above found.
So here ya go, out of the "1929-1950 Master Parts Catalog" page 293, gp.6.008, pn.3680905 ----1946-50 'HR' (w/Forge No. 3681642)(has dab of green paint)$18.75.
That is exactly what I have in my '50,3604 and to me that would indicate that it is the original axle that was in the truck. If the last post was implying that the parts ordered from the parts catalog are different, I believe that is incorrect. Although the parts ordered from the parts catalog are "replacement" parts, that does not mean that they have different forging numbers or are marked diferently that the original parts. They are "factory replacement" parts and exactly the same as an original part.
Denny Graham
Sandwich, IL
