The ornamental design for a socket for holding a lock washer and nut, as shown and described.
FIG. 1 is a three quarter bottom, side perspective view of a socket for holding a lock washer and nut showing my new design;
FIG. 2 is a side elevational view thereof, taken in the direction of arrow 2 in FIG. 6, it being understood that all side views are mirror images of each other;
FIG. 3 is a cross sectional view taken on line 3-3 of FIG. 2;
FIG. 4 is a bottom plan view thereof, taken in the direction of arrow 4 in FIG. 6;
FIG. 5 is a top plan view thereof, taken in the direction of arrow 5 in FIG. 6; and,
FIG. 6 is a view identical to FIG. 1 with descriptive legend directional arrows included to show the direction from which FIGS. 2, 4 and 5 are taken.