MS51922E (NOTICE 1), MILITARY STANDARD: NUT, SELF-LOCKING, HEXAGON-PREVAILING TORQUE, GENERAL PURPOSE, 250 DEG. F, UNC-2B AND UNF-2B (06 JUN 1988) [S/S BY MIL-DTL-45913]

MS51922E (NOTICE 1), MILITARY STANDARD: NUT, SELF-LOCKING, HEXAGON-PREVAILING TORQUE, GENERAL PURPOSE, 250 DEG. F, UNC-2B AND UNF-2B (06 JUN 1988) [S/S BY MIL-DTL-45913].