AIA/NAS - Aerospace Industries Association of America Inc.
Scope
THE PURPOSE OF THIS STANDARD IS TO ESTABLISH SYMBOLS FOR SCREW THREADED FASTENER DESCRIPTIVE FACTORS THAT OCCUR FREQUENTLY DURING DISCUSSlON OF PROBLEMS OF DESIGN ENGINEERING CHANGES@ CONSTRUCTION AND MAINTENANCE OF AIRCRAFT AND AERONAUTlCAL EQUIPMENT@ AND ALSO THOSE USED DURlNG THE DlSCUSSlON OF DESIGN@ DEVELOPMENT@ TESTING@ EVALUATION AND COMPARISON OF FASTENER DESIGNS. APPLICATION: THE FOLLOWING SYMBOLS AN ORDER OF NOTES SHALL BE USED WHERE APPLICABLE AND PRACTICABLE ON ENGINEERING DOCUMENT@ SUCH AS DRAWINGS FOR SCREW THREADED FASTENERS USED IN THE DESIGN AND CONSTRUCTlON OF MILITARY AIRCRAFT AND AERONAUTICAL EQUIPMENT.