MS14439 (NOTICE 1), MILITARY STANDARD: BAR, METAL, HEXAGON, CORROSION RESISTANT, TYPE 420 (30 OCT 1991) [SUPERSEDED BY SAE-AMS-QQ-S-763]
MS14439 (NOTICE 1), MILITARY STANDARD: BAR, METAL, HEXAGON, CORROSION RESISTANT, TYPE 420 (30 OCT 1991) [SUPERSEDED BY SAE-AMS-QQ-S-763].