AIA/NAS 1772-2012 pdf download NATIONAL AEROSPACE STANDARD
MATERIAL:
STEEL: CARBON OR ALLOY HEAT TREATED SAE1030 OR BETTER: NEITHER THE SULFUR NORPHOSPHORUS CONTENT SHALL EXCEED 050% BY WEIGHT.CRES: A286 PER AMS5525，AMS5732 OR AMS5737.
FINISH:
STEEL:CADMIUM PLATE PER AMS-OO-P-416TYPE IICLASS 2SILVER PLATE FOR 800 F USE PER AMS2410 TO A .0002 MIN THICKNESS ON SURFACECRES:WHICH CAN BE TOUCHED BY A 0750 BALL,THREADS SHALL SHOW COMPLETECOVERAGE，BUT THICKNESS REQUIREMENTS ON THREADS IS WAIVED.PASSIVATE PER AMS2700 METHOD 1, CLASS 4 ALL CRES PARTS BEFORE THE APPLICATIONOF DRY FILM LUBRICANT.
LUBRICATION:
MOLYDISULFIDE(MoS DRY FILM LUBRICANT PER NAS3356
CODE:
“_”INDICATES STEEL，CADMIUM PLATED WITH DRY FILM LUBRICANT”C”IN PLACE OF DASH INDICATES CRES NUTS WITH SILVER PLATE.”K”SUFFIXED TO THE DASH NUMBER INDICATES DIMPLED RIVET HOLES.M”SUFFIXED TO THE DASH NUMBER INDICATES CRES NUTS, WITHOUT SILVER PLATE, WITH DRYFILM LUBRICANT.”W” SUFFIXED TO THE DASH NUMBER INDICATES PROJECT WELD NIBS FOR CRES SILVER PLATEDPARTS ONLY (NO SILVER PLATE ON WELD NIBS).”X” IN PLACE OF DASH INDICATES CADMIUM PLATED NUTS WITHOUT DRY FILM LUBRICANT.
EXAMPLES OF PART NUMBER
STEEL:
NAS1772-4.2500-28 UNJF-3B THREAD，PLAIN RIVET HOLES,CADMIUM PLATED WITH DRYFILM LUBRICANT..2500-28 UNJF-3B THREAD,DIMPLED RIVET HOLESCADMIUM PLATED WITH DRYFILM LUBRICANTNAS1772X4.2500-28 UNJF-3B THREAD,PLAIN RIVET HOLES,CADMIUM PLATED AND WITHOUTDRY FILM LUBRICANT.NAS1772X4K.2500-28 UNJF-3B THREAD，DIMPLED RIVET HOLES,CADMIUM PLATED AND1
NAS1772-4K
WITHOUT DRY FILM LUBRICANT.
CRES:NAS1772C4.2500-28 UNJF-3B THREADPLAIN RIVET HOLESSILVER PLATED0NAS1772C4K.2500-28 UNJF-3B THREAD，DIMPLED RIVET HOLESSILVER PLATED”NAS1772C4W.2500-28 UNJF-3B THREAD，WELD NIBSSILVER PLATED.

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