FIG. 1 is an isometric perspective view of a screw showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a rear view thereof;

FIG. 8 is a fragmentary sectional view taken generally along line 8--8 of FIG. 2 in the direction of the arrows; and,

FIG. 9 is a fragmentary sectional view taken generally along line 9--9 of FIG. 2 in the direction of the arrows.