Qq-a-601 fed spec 1st material response and mil-c-6021 mil spec 2nd material response and mil-a-8625 mil spec 3rd material response
Qq-a-250/11 fed spec 1st material response and mil-c-6021,class 2b,grade d mil spec 2nd material response
Mil-c-6021,cl 2b gr d mil spec single material response overall or mil-s-22141 mil spec single material response overall