Originally Posted by
wschruba
No, they don't need to be lubed, but they do need to be a specific size for a given hole. The packaging will tell you how big the hole needs to be for a given screw.
They are gently tapered so the "right size" is about the middle of the screw.
Yeah, I assumed the drill size was important, and I followed the spec that was provided by McMaster Carr, where I bought the drive screws. Anyway it worked out fine the way I did it.