MIL-S-7839B (NOTICE 2), MILITARY SPECIFICATION: SCREW, STRUCTURAL, AIRCRAFT (09 NOV 1999) [S/S BY NASM7839]

MIL-S-7839B (NOTICE 2), MILITARY SPECIFICATION: SCREW, STRUCTURAL, AIRCRAFT (09 NOV 1999) [S/S BY NASM7839]., MIL-S-7839B, dated 21 DECEMBER 1973, is hereby reactivated and may be used for either new or existing design acquisition.