"THIS NSN IS USED TO PURCHASE A MINIMUM OF 20 TO A MAXIMUM OF 59 CONTAINERS. TO PURCHASE A MINIMUM OF 1 TO A MAXIMUM OF 19 CONTAINERS USE NSN 3439-01-377-2573. TO PURCHASE 60 OR MORE CONTAINERS USE NSN 3439-01-407-3268. CERTIFICATION: B50TF161-S6, CLASS B; RR9507/29 ISS.1; BMS1067E TYPE II; SS9212 REV O"