Mil-t-5066,type @2 mil spec single material response overall
Mil-t-5066 mil spec 1st material response overall or mil-s-6758 cond f mil spec 2nd material response overall or mil-s-6050 cond f mil spec 3rd material response overall or mil-t-6732 type 1 cond ht-125 mil spec 3rd material response overall