Help needed, steering shaft nut size and thread

[bigtreeicons808]

Does anyone know the nut size of the steering shaft? The one to connect the crush can to the steering shaft?


I have the car being shipped and am really in a bind as the shipper rejected the car because the steering wheel was loose. I’m flying up there to try and fix it but if you know the thread as I’m searching but coming up with nothing. I can find GM but the seller was a real piece of work and his mechanic didn’t secure the nut. It looks damaged so I don’t know if they even installed it.

Any help would be appreciated
Thank you
b3

 

[Challenger RTA]

In my minds eye it came into focus, being 1/2" 20. Take a lug nut off and try it. Lug nut is 1/2" 20. Then you know what is not. Or 9/16-18

 

[bigtreeicons808]

thanks for the info. I searched all night on the red eye over and I couldn’t find anything distinctive enough but I search 1971 Challenger and 1/2-20 pops up right away smh… they don’t have any shallow nuts at Home Depot at the moment so checking Oreilly right now. Brought my tap and die for 1/2-20 so one way or another, it will fit

 

[Challenger RTA]

thanks for the info. I searched all night on the red eye over and I couldn’t find anything distinctive enough but I search 1971 Challenger and 1/2-20 pops up right away smh… they don’t have any shallow nuts at Home Depot at the moment so checking Oreilly right now. Brought my tap and die for 1/2-20 so one way or another, it will fit

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Found this in Steering shaft thread size in Cuda & Challenger General Discussion (ROSEVILLE MOPARTS)

 

[bigtreeicons808]

Damn, thank you for that, off to oreillys

 

[bigtreeicons808]

Guy in youtube too it off with a 3/4” socket… 70 and 71 are different as well…

 

[Challenger RTA]

I think this is were some think it's 9/16". While searching I came across this.

 

[EV2RTSE]

Yeah I've now taken apart some more 1970 columns since that post on ebodies.org, some had the smaller 1/2" x 20 threads with the 3/4" nut, and some had the 9/16" with 7/8" nut. I think the bigger size may have been out of earlier built cars and at some point they switched to the smaller size, I think then it stayed the same all the way through 1974.