Aluminum alloy, qq-a-200/8 comp 6061 temper t6 or comp 2024 temper t4; anodized mil-a-8625 type 1 cl 1; 3.375 in. Nom o/a od, 0.625 in. Nom o/a lg; 2.920 in. Min, 2.930 in. Max id; 7 slots located on outer periphery, 0.062 in. Nom w by 0.500 in. Lg slots; 1 hole 0.812 in. Nom diameter through face on 2.000 in. Nom bolt circle dia, 1 slot 0.300 in. Nom w extending from outer edge and intersecting w/hole