MS16211A, MILITARY STANDARD, NUTS, PLAIN, SQUARE, REGULAR, UNFINISHED, COPPER-SILICON ALLOY, UNC-2B NONMAGNETIC (16 AUG 1966)
MS16211A, MILITARY STANDARD: NUTS, PLAIN, SQUARE, REGULAR, UNFINISHED, COPPER-SILICON ALLOY, UNC-2B NONMAGNETIC (16 AUG 1966).