Steel, stainless comp 303 passivated, dim., 0.180 in. Nom o/a lg, 0.244 in. Min, 0.246 in. Max left flange od, 0.035 in. Nom left flange w, 0.214 in. Min, 0.216 in. Max right flange od, 0.051 in. Nom right flange w, 0.106 in. Min, 0.109 in. Max center od, 0.094 in. Nom center od width, max surface finish, center od and inner flange faces 32 microinches aa, all other surfaces 125 microinches aa