[TerryAT]

I removed my control arms to have new bushings installed. I had to press out the bolts that hold the upper arm to the frame. After removing them, when I put the nuts back on the bolts in order not to lose them, I find its hard to turn them once the bolt is flush with the end of the nut.(after about 4-5 turns). Are these supposed to be hard to turn? Since they do not use any lock washers when they are installed, Im thinking maybe thats why? I did have the nuts out flush with the ends of the bolts before I pressed them out. Im thinking maybe pressing against the nuts has something to do with it?? Or again, are the nuts supposed to be this way? I do believe they are called locking nuts. They dont use lock washers.Thanks

 

[dyno jonn]

If you look at the nuts when they are off, you will see that the outer end is crimped slightly into a triangle shape. Yes, they are lock nuts.