3matl beryllium/copper, cond a, .010 porm .001 in. Thk per specification qq-c-533, finish, chemical, blacken per 580-0139-00, heat treat per mil-h-7199, .281 porm .005 o/a lg, with .086 in. Diameter hole, unevenly spaced, one end chamfered .020 to .030, .010 relief max
