FIG. 1 is a top perspective view of the fastener head embodying the new design;
FIG. 2 is an enlarged top perspective view thereof taken from indication circle 2 of FIG. 1;
FIG. 3 is a top perspective view of FIG. 2;
FIG. 4 is a right side view of the fastener head, the left side view, front view and rear view being the same as the right side view;
FIG. 5 is an enlarged side view thereof taken from indication box 15 of FIG. 4;
FIG. 6 is an enlarged top view of the fastener head; and,
FIG. 7 is a cross section view thereof taken from line 7-7 of FIG. 6.
The broken lines rendered in the drawings illustrates the environment of the claimed design and forms no part thereof. The broken lines immediately adjacent the solid line portions of the design define the bounds of the claim and form no part thereof. The dot-dash-dot broken lines rendered within the drawings form no part of the claimed design.