sigh007 发表于 2012-3-29 11:51:07

MIL-S-7839B (NOTICE 2)


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