Since the term "grounding screw" is not defined within the NEC, it's my intepretation that the term is used simply to clearly define the function of the screw. That is, any screw [except sheet-metal, of course] used solely to maintain continuity between a EGC and the box is by definition a "grounding screw".
That being said, I'm set in my ways: I always like to use the green screws, and I've actually moved EGCs out from under cable-clamp screws just to put them under a green screw.
Same applys with putting conductors counter-clockwise under screws; it's not wrong, just not how I do it.
-John
[This message has been edited by BigJohn (edited 05-21-2004).]
