1950 Plymouth Steering wheel nut

[belvedere666]

I have a 1950 Plymouth with a steering box from a 49. I have the 11/16-20 steering wheel nut but it doesn’t fit the old steering shaft from the 50 that was in there, or the 49 shaft i installed.
It’ll thread about three turns and then it feels like it’s tearing up the threads. Is there a unique size for the 49/50? I’m not sure taking a die to it to rethread it is a good idea.

does anyone know the actual size and pitch?

i can’t seem to find an answer using the search function.

[Sniper]

My parts manual shows that all 49-54's use the same nut.  PN 852414, 3/4-20

 

 

[belvedere666]

Thanks Sniper. I tried to test fit a 3/4-16 because that was the finest thread I could find at the local hardware store.

 

I’ll keep my eye out for a 20.

[Sam Buchanan]

Check at a tractor dealership, I found axle nuts at the local John Deere store.

[Los_Control]

I was going to suggest tractor supply.  I usually find everything I need at Ace Hardware. Since I'm a tightwad I started buying bolts from tractor supply.

I cant remember what I was looking for in a large bolt but they did have the fine thread 20 pitch that I needed.

 

And they sell them by the pound, not by the individual piece. Recently bought 12 bolts/washers/nuts .... price was $1.39.

I tried counting how many carriage bolts I needed for the wood in the bed, ran out of toes & fingers. So I just bought 25 to get started .... Was cheap at tractor supply.