Unless the screw were something special.... Like stainless, or some other type of alloy, for the specific purpose of bearing shock, vibration, of additional weight, then I could see an issue. But if that were the case, you you would be using a larger screw anyway. Like a #10 or 1/4/20, and lock-tight.
And yes, I often don't bother with them, (the ones that come with fixtures.) they are usually of inferior quality.
[This message has been edited by e57 (edited 10-23-2005).]
