FIG. 1 is a top perspective view of a first embodiment of a portion of an arm of a riveter showing my new design;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a rear view of FIG. 1;
FIG. 4 is a left view of FIG. 1;
FIG. 5 is a right view of FIG. 1;
FIG. 6 is a top view of FIG. 1;
FIG. 7 is a bottom view of FIG. 1;
FIG. 8 is another perspective view of FIG. 1;
FIG. 9 is a top perspective view of a second embodiment of a portion of an arm of a riveter showing my new design;
FIG. 10 is a front view of FIG. 9;
FIG. 11 is a rear view of FIG. 9;
FIG. 12 is a left view of FIG. 9 ;
FIG. 13 is a right view of FIG. 9;
FIG. 14 is a top view of FIG. 9;
FIG. 15 is a bottom view of FIG. 9; and
FIG. 16 is another perspective view of FIG. 9.
FIG. 17 is a top perspective view of a first embodiment of a portion of an arm of a riveter showing my new design;
FIG. 18 is a front view of FIG. 17;
FIG. 19 is a rear view of FIG. 17;
FIG. 20 is a left view of FIG. 17;
FIG. 21 is a right view of FIG. 17;
FIG. 22 is a top view of FIG. 17;
FIG. 23 is a bottom view of FIG. 17;
FIG. 24 is another perspective view of FIG. 17;
FIG. 25 is a top perspective view of a second embodiment of a portion of an arm of a riveter showing my new design;
FIG. 26 is a front view of FIG. 25;
FIG. 27 is a rear view of FIG. 25;
FIG. 28 is a left view of FIG. 25;
FIG. 29 is a right view of FIG. 25;
FIG. 30 is a top view of FIG. 25;
FIG. 31 is a bottom view of FIG. 25; and,
FIG. 32 is another perspective view of FIG. 25.
In the drawings, the broken lines shown in the figures depict environmental subject matter only and form no part of the claimed design.