FIG. 1 is a front isometric view of a filter nut for a high-pass filter assembly showing my new design in solid lines, with the broken lines showing environmental features that form no part of the claimed design;

FIG. 2 is a rear isometric view thereof;

FIG. 3 is a front isometric view of the filter nut shown in FIG. 1;

FIG. 4 is a rear isometric view thereof;

FIG. 5 is a bottom plan view thereof

FIG. 6 is a side elevational view thereof; and,

FIG. 7 is a top plan view thereof.