I had the Cam Bolts in the front for 3 years. Never loosened. Not too many people wheel thier rigs harder than I do!

I tightened them once. Check them, and all other bolts for that matter after every trail ride. The Cam bolts have never loosened. The Control arm bolts have. As well as the Track bar bolts.

If your worried, tack weld the cam bolt washer to the control arm mount. Then it can't move.