"ALUMINUM CASTING,QQ-A-601,ALMAG 35,COND F,8.125 IN. LG,7.625 IN. W,4.125 IN. H,4 HOLES 5/8-11UNC-3B 0.938 IN. DP,0.531 DRILL 1.062 IN. DP,COUNTERSINK 100 DEGREES TO 0.625 IN.MIN. 0.656 IN. MAX DIA,ON 3.820 IN. BY 6.375 IN. MOUNTING CENTERS,2 HOLES 0.125 IN. MIN. 0.130 IN. MAX DIA THRU,ON 4.000 IN.MOUNTING CENTERS,4 HOLES 0.688 IN. MIN. 0.697 IN. MAX DIA DRILL,1.375 IN. DIA SPOTFACE,0.125 IN. DP,4.000 IN. BY 4.000 IN.MOUNTING CENTERS"