Material steel, qq-s-766, cl 302, cond a; finish black oxide, mil-c-13924, cl 4; o/a lg 6.160 in. Nom; o/a w 0.183 to 0.193 in.; o/a ht 4.380 in. Nom; o/a thk 0.096 to 0.104 in.; 2 holes 0.154 to 0.158 in. Countersink 0.300 to 0.315 in. Spaced c to c along lg 3.750 in.; 2 holes 0.150 in. Diameter ea side spaced 0.870 in. From top; 2 holes 0.156 to 0.159 in. Diameter counter bore 0.207 to 0.215 in. Dia, 0.025 to 0.030 in. Deep spaced 4.180 in. From top ea side
