MS90509 (NOTICE 1), MILITARY STANDARD: S SHAPES (I BEAM), STRUCTURAL STEEL, CARBON, MEDIUM (01 JUN 1993) [NO SUPERSEDING DOCUMENT].
MS90509 (NOTICE 1), MILITARY STANDARD: S SHAPES (I BEAM), STRUCTURAL STEEL, CARBON, MEDIUM (01 JUN 1993) [NO SUPERSEDING DOCUMENT].