The thread locker may end up being too strong and cause the posts to loosen on the inside when you try and undo the threads. There are spring washers made for situations such as this. There and NOT lock washers but they apply a listed pressure on the nut to prevent them from backing off.
http://www.globalspec.com/learnmore/mechanical_components/springs/washer_springs
http://www.globalspec.com/learnmore/mechanical_components/springs/washer_springs