steel, carbon, hr or cr temper no. 3, 4 or 5 spec qq-s-698, 0.1196 in. thk sheet or 0.120 in. thk strip cadmium plated, type 2, class 3, spec qq-p-416, 2.250 in. o/a lg, 1.490 in. o/a w, c/o one bracket fscm 19207 part no. 11678154-1, one guard fscm 19207 part no. 11678154-2, one mounting hole, 0.660 in. min id, 0.720 in. max id