To prevent this from happening, you can employ a sealing substance like Henkel's Loctite red threadlocker. This nifty goo can be drizzled into a screw's threading, sealing it in place with ...
One of the most popular brands of threadlocker is Loctite, which started as a product name (Loctite, the liquid locknut) in the 1950s and then became the name of the whole corporation in 1963.