"ALUMINUM ALLOY QQ-A-601 COMP 356-T6,ANODIZED BPS FW4001,DIM.,0.440 IN. NOM O/A LG,1.910 IN. NOM FLANGE OD,0.250 IN. MIN,0.270 IN. MAX FLANGE W,2.400 IN. DISTANCE ACROSS MOUNTING HOLE EXTENSIONS,0.265 IN. MIN,0.270 IN. MAX DIA HOLES,0.540 IN. FROM TOP W/1.800 IN. C TO C DISTANCE,ONE THREADED HOLE 0.125-27 NPT ON VERTICAL CENTERLINE 0.540 IN. FROM TOP,ONE THREADED HOLE 0.470 IN. FROM BOTTOM ON VERTICAL CENTERLINE BOSSED PER AND10050 W/0.500-20 UNFCLASS 3B THREADS BY 0.440 IN. LG"