you can use a little bit of locktite 242 (the blue stuff) on it as well. that should help with vibration, but not to the point that you won't be able to remove them if needed
http://www.menards.com/main/home-decor/craft-supplies/glue/all-purpose-glue/loctite-threadlocker-242-removable/p-1444432335437-c-7172.htm?tid=2691543961843864946