Anti-loosening Nut

FIG. 1 . 1 is a perspective view of a anti-loosening nut; FIG. 1 . 2 is a front elevational view thereof; FIG. 1 . 3 is a rear elevational view thereof; FIG. 1 . 4 is a left elevational view thereof; FIG. 1 . 5 a right elevational view thereof; FIG. 1 . 6 a top elevational view thereof; FIG. 1 . 7 a bottom elevational view thereof; FIG. 1 . 8 a cross-sectional view thereof, taken along line 1 . 8 - 1 . 8 of FIG. 1 . 5 ; and FIG. 1 . 9 is an exploded perspective view thereof, showing my design.