MS51988B (NOTICE 1), MILITARY SPECIFICATION: NUT, SELF-LOCKING, FLANGED, PREVAILING TORQUE, STEEL, CADMIUM, UNC AND UNF (03-FEB-2000)

MS51988B (NOTICE 1), MILITARY SPECIFICATION: NUT, SELF-LOCKING, FLANGED, PREVAILING TORQUE, STEEL, CADMIUM, UNC AND UNF (03-FEB-2000)., MS51988B is inactive for new design and is no longer used except for replacement purposes