The degree of fit between a screwdriver and a screw
Not necessarily. A screw like a cross point, usually 1, which screws the big one with great force, and screws smaller than it.
A good screwdriver is a good material, many times it will not deform, of course, the accuracy is high, with good or bad, only screws, screw hole size is not standard, there is no way to match. With the beat of a screw hole, not beat spent.
