Ams6300 assn std 1st material response overall or ams6280 assn std 2nd material response overall or mil-s-605 mil spec 2nd material response overall or ams6322 assn std 3rd material response overall or mil-s-6049 mil spec 3rd material response overall or ams6382 assn std 4th material response overall or mil-s-6758 mil spec 5th material response overall