AA-D-600B, FEDERAL SPECIFICATION: DOOR, VAULT, SECURITY (26 MAR 1969

AA-D-600B, FEDERAL SPECIFICATION: DOOR, VAULT, SECURITY (26 MAR 1969)., This specification covers vault doors which are designed to meet the protective storage criteria for classified material set forth in Executive Order 10501, as amended "Safeguarding Official Information in the Interest of the Defense of the United States."