Aluminum alloy, qq-a-225/6 comp 2024 temper t4; anodized, mil-a-8625 type 1; 5.430 in. Min, 5.440 in. Max od external flange; 4.245 in. Min, 4.255 in. Max id external flange, 0.834 in. Min, 0.854 in. Max lg external flange; 1.140 in. Min, 1.170 in. Max o/a lg; 4.220 in. Min, 4.250 in. Max od internal flange, 4.072 in. Min, 4.077 in. Max id internal flange; 4 holes 0.127 in. Min, 0.137 in. Max diameter through internal flange outer periphery, 0.130 in. Min, 0.180 in. Max distance from 1st end to hole center; 2 thd holes throug h one wall of external flange face located on 2.500 in. Nom bolt circle dia, no. 6-32 unc series cl 2b thd; 1 hole 0.275 in. Min, 0.285 in. Max diameter through external flange face located on 2.250 in. Nom bolt circle; 1 hole 0.150 in. Min, 0.160 in. Max diameter through bottom wall of external flange on 2.250 in. Nom bolt circle dia, hole c0untersunk 95 min, 1.05 in. Max degrees to 0.270 in min, 0.285 in. Max dia