"THIS NSN IS USED TO PURCHASE A MINIMUM OF 1 TO A MAXIMUM OF 39 CONTAINERS, TO PURCHASE A MINIMUM OF 40 TO A MAXIMUM OF 119 CONTAINERS USE NSN 3439-01-407-7674, TO PURCHASE A MINIMUM OF 120 OR MORE USE NSN 3439-01- 407-7675. MAGNESIUM ZIRCONATE AND NICKEL-CHROMIUM ALLOY-ALUMINUM POWDER. CERTIFICATION: RR9507/20 ISS.2; EMS52432AA CLASS XXVIII"