1952-59 Ford Ball joint castle nut size

Silly question but, what is the thread size on the ball joints on 56 cars. I was going to pick up some after work but forgot to bring one with me.

 

1/2-20? This sounds close.

 

According to my Ford parts book, the upper is a 9/16 - 18 and lower is 5/8 - 18.

 

Good to know. I just reach into one of my parts buckets when I need hardware. I save old castle nuts and some of the new ones I've gotten with components were so bad, I used my old ones.

 

Thanks. I tried two different parts stores and no luck. O'Riellys said they could get me one special order for $175.99! I'm going to try Fastenal. I've had real good luck with them.

 

Hey check out Google
World products balljoints in Florida. Great price on all 4. I think it was 84$ to my door.

 

Just googled it, came up with everything but World Products in Florida. Got a link?

 

Special order on ball joints or just the nuts... $175.99.. that's nuts.

 

It was just the one nut. The guy on the phone said it was due to shipping. I'm sure it had more to due with the fact it was for a 56 Ford. I'm sure I can get them from Fastenal pretty cheap. I get the same pricing they give my employer.

 

Sorry guy forgot the main word world suspension products.

 

Found 'em...

 

I had to cut the castle nut off of my power steering control valve, I picked up a new one at Ace hardware for about a buck.