Dabac is 100% correct.
Originally Posted by
RubeRad
So if you have threaded a screw into wood, and you have greasy fingers, and you hold the head of the screw and wiggle it in a small CCW, it will eventually screw in?
If it is a machine screw with smooth threads with a bit of play it absolutely would. You may have to press really hard or open a hole if you want to try it with a wood screw.