Disk 0.500 in. Dia, 0.040 in. Thk, with one .0307 hole porm .0002, and one hole .0902 in. Diameter porm .0001, shaft 0.290 in. Lg, .0312 diameter porm .0002; shaft matl, cres bar, type 416, cond t per specification qq-s-764, passivate per qq-p-35 type 2; disk matl, al aly rod 2024-t4 per qq-a-225/6, with chem film finish, class 1a per mil-c-5541, dyed yellow, item used on coupler, mode-select, p/n 75700000-1
