MS16211A (NOTICE 1), MILITARY STANDARD: NUTS, PLAIN, SQUARE, REGULAR, UNFINISHED, COPPER-SILICON ALLOY, UNC-2B NONMAGNETIC (27 MAR 1991)
MS16211A (NOTICE 1), MILITARY STANDARD: NUTS, PLAIN, SQUARE, REGULAR, UNFINISHED, COPPER-SILICON ALLOY, UNC-2B NONMAGNETIC (27 MAR 1991).