Strange shackle stud size nut

[russcc]

Using a rear end of unknown origin for a project. The shackle studs threads are 9/16" -18. Very hard to find. Anyone have some spare castle nuts that size they would like to part with. Thank you Fordbarners.

[deuce lover]

I just looked on EBAY,There are 10 listings for 9/16 X18 castle nuts.

Here is a link to 1 listing.
http://www.ebay.com/itm/5-9-16-18-Sl...IAAOSwNphWakUR

[JSeery]

Menards has them

https://www.menards.com/main/tools-h...4439925530.htm

Amazon

https://www.amazon.com/s/ref=nb_sb_n...-18+castel+nut

[1948F-1Pickup]

As prior folks have commented, they are available.
I will side with you on 9/16. It is the most difficult
fastener size to find retail.

[russcc]

Thank you Fordbarners.

[cmbrucew]

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russcc
Find a shop that rebuilds truck springs. You might indicate what part of the country you live, it might lead to offers of help.
Bruce

[Kube]

Originally Posted by russcc

Using a rear end of unknown origin for a project. The shackle studs threads are 9/16" -18. Very hard to find. Anyone have some spare castle nuts that size they would like to part with. Thank you Fordbarners.

9/16" for the shackle pins? No way. 3/8" all day, every day.

[Charlie ny]

MSC Industrial Supply 800 645 7270 stock item .
Charlie ny

[deuce lover]

Originally Posted by Kube

9/16" for the shackle pins? No way. 3/8" all day, every day.

He means the U bolts for the spring plate.

[Kube]

Originally Posted by deuce lover

He means the U bolts for the spring plate.

How the heck did you figure that?
You're good I tell ya... you're good.

I never would have jumped from "shackle studs" to U-bolts.

[JSeery]

Would have never guessed that one!

[rotorwrench]

The AN (Army Navy Spec) designation for a 9/16" X 18 tpi bolt is AN9. AN310-9 castellated nuts are available for this size but are not likely all that common in use any more. A lot of that large stuff would date back to WWII usage on large aircraft.

It must be a big rear axle!

[deuce lover]

Originally Posted by Kube

How the heck did you figure that?
You're good I tell ya... you're good.

I never would have jumped from "shackle studs" to U-bolts.

Thanks for the compliment.When he mentioned 9/16 X18 to me it had to be the U bolts.I reacted to quickly.I should have asked first if he meant the U bolts.

BTW Kube,Read about you in the July-Aug V8 Times.Congrats on being the '40 advisor!

[Kube]

Originally Posted by deuce lover

Thanks for the compliment.When he mentioned 9/16 X18 to me it had to be the U bolts.I reacted to quickly.I should have asked first if he meant the U bolts.

BTW Kube,Read about you in the July-Aug V8 Times.Congrats on being the '40 advisor!

And I had immediately thought he meant the distance between flats on the hex huts.

Thanks for the kind thought. I enjoy helping others when I am able. Somehow I found myself being "that old guy" that used to help me. How did that happen so quickly???