MS9701A (NOTICE 1), MILITARY STANDARD: NBOLT, MACHINE-DOUBLE HEXAGON, EXTENDED WASHER HEAD, CORROSION AND HEAT RESISTANT STEEL, .500-20 UNJF-3A (21 OCT 1991) [NO SUPERSEDING DOCUMENT].
MS9701A (NOTICE 1), MILITARY STANDARD: NBOLT, MACHINE-DOUBLE HEXAGON, EXTENDED WASHER HEAD, CORROSION AND HEAT RESISTANT STEEL, .500-20 UNJF-3A (21 OCT 1991) [NO SUPERSEDING DOCUMENT].