JUST SAY NO... TO JAM NUTS!
If you've ever had a Tie Rod or Draglink that uses jam nuts then you know how hard it is to keep your front end aligned. It doesn't matter how much Loctite you glob on or if you bust a knuckle torquing them down... It's inevitable, they will at some point come loose and an create an issue. With so much riding on the alignment of your steering, don't jeopardize your safety and performance with this sub-par solution.
SO, WHAT IS THE SOLUTION?