MS51969B (NOTICE 1), MILITARY STANDARD: NUT, PLAIN, HEXAGON BRASS, BLACK CHEMICAL FINISH, UNC-2B (03-FEB-2000)

MS51969B (NOTICE 1), MILITARY STANDARD: NUT, PLAIN, HEXAGON BRASS, BLACK CHEMICAL FINISH, UNC-2B (03-FEB-2000)., MS51969B is inactive for new design and is no longer used except for replacement purposes.