Expansion screw

Description

FIG. 1 is a top perspective view of the expansion screw, showing our new design;

FIG. 2 is a bottom perspective view thereof.

FIG. 3 is a front elevational thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the drawings illustrate portions of the expansion screw and form no part of the claimed design.

Claims

The ornamental design for an expansion screw, as shown and described.