NASM7839, ADOPTION NOTICE (1 DEC 1999)., NASM7839, "SCREWS, STRUCTURAL, AIRCRAFT", was adopted on 01-DEC-99 for use by the Department of Defense (DoD). Proposed changes by DoD activities must be submitted to the DoD Adopting Activity: Commander, Defense Supply Center Philadelphia, ATTN: DSCP-ITAA, 700 Robbins Avenue, Philadelphia, PA 19111-5096. Copies of this document may be purchased from the Aerospace Industries Association of America 1250 Eye Street, N.W., Suite 1200 Washington, DC, United States, 20005-3924.