Mil-a-22771,t6 mil spec single material response overall
Qq-a-225/8,t651 fed spec 1st material response or qq-a-250/11,t651 fed spec 1st material response or qq-a-200/8,t6510 or t6511 fed spec 1st material response or mil-a-22771,t652 mil spec 2nd material response