MS16218B (NOTICE 1), MILITARY STANDARD: SCREWS, MACHINE, FLAT COUNTERSUNK HEAD, SLOTTED, COPPER-SILICON ALLOY, UNC-2A, NONMAGNETIC (27 MAR 1991) [SUPERSEDED BY NASM16218]

MS16218B (NOTICE 1), MILITARY STANDARD: SCREWS, MACHINE, FLAT COUNTERSUNK HEAD, SLOTTED, COPPER-SILICON ALLOY, UNC-2A, NONMAGNETIC (27 MAR 1991) [SUPERSEDED BY NASM16218].