Radius Arm Nut Size

[akforsyth]

So the time has come to put everything back together and I cannot find my castle nuts from the radius arms anywhere.... I am heading to the store tomorrow morning (yeah it's an hour drive for me to ge there) to get some more grade 8 bolts for the rear suspension and figured I would grab a couple of new nuts instead of ripping the house apart and making my wife mad. The only problem is I have searched everywhere to try to find out what size the nuts are but am not able to find it anywhere. Can someone help me out here? Thanks.

 

[dieselracer]

They should be 3/4" NCT, I know it takes a 1-1/8" socket to get them off/on.