Aluminum alloy, qq-a-225/9, comp 7075, temper t7351, anodized lcp77-1063, type 1, cl 1 fscm 36659, 1.900 in. Flanges dia, 1.530 in. Drum dia, 0.062 in. Flanges thk, 0.4374 in. Min, 0.4380in. Max bore dia, 0.780 in. W o/a, incl one coil spring and twobearing sleeves
