Yeah, they're definitely worth using. Unfortunately it wouldn't have mattered, the bolts are threaded directly into the driveshafts. But they're locktited good this time!Pinch Lock Nuts, a.k.a. "Crimp" nuts. (NOT "nylock" nuts).
You can get these at Ace Hardware. I've started using these on nearly everything, and nothing has come loose when I torque them down to spec. Offroad Design provides these on just about everything they sell. They work! They're simple. And you don't have to pour locktite on them. (although I do sometimes anyway).
The '71/72 grille hanging over your door...... priceless.![]()
The grille is the one I pulled off of it. Supports are toasted, but it was perfect for a decoration.

. My driveshafts are 1350 flanges at both ends of the transfer case, but are regular-'ole yoke strapped at the diffs. At the t-case end, my bolts pass through the mating CV flanges using grade 8 with Pinch Lock nuts, without issue. My point is, I think it might have mattered. But now that you have locktite on them, it doesn't, as long as the bolt shanks are up to the task. 


