MS51969B, MILITARY STANDARD: NUT, PLAIN, HEXAGON BRASS, BLACK CHEMICAL FINISH, UNC-2B (24-JUL-1972)

MS51969B, MILITARY STANDARD: NUT, PLAIN, HEXAGON BRASS, BLACK CHEMICAL FINISH, UNC-2B (24-JUL-1972)., This specification sheet is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and procurement specification FF-N-836.