AIA/NAS 1775-2011 pdf download NUT, SELF-LOCKING, PLATE, TWO LUG, LOW HEIGHT, C’BORED, REDUCED RIVET SPACING, 1 60 KSI, 450 °F, 800 °F
MATERIAL:
STEEL – CARBON OR ALLOY HEAT TREATED SAE1 030 OR BETTER; NEITHER THE SULFUR NOR PHOSPHORUS CONTENT SHALL EXCEED .050, BY WEIGHT.
CRES – A286 PER AMS5525, AMS5732 OR AMS5737.
FINISH:
STEEL – CADMIUM PLATE PER AMS-QQ-P-41 6, TYPE II, CLASS 2.
CRES – SILVER PLATE FOR 800 °F USE PER AMS241 0 TO A .0002 MINIMUM THICKNESS ON SURFACE WHICH CAN BE TOUCHED BY A Ø.750 BALL. THREADS SHALL SHOW COMPLETE COVERAGE, BUT THICKNESS REQUIREMENTS ON THREADS IS WAIVED. PASSIVATE PER AMS2700, METHOD 1 ,CLASS 4, ALL CRES PARTS BEFORE THE APPLICATION OF DRY FILM LUBRICANT.
LUBRICATION:
MOLYDISULFIDE (MoS 2 ) DRY FILM LUBRICANT PER NAS3356.
CODE:
“-” 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 DRY FILM LUBRICANT.
“W” SUFFIXED TO THE DASH NUMBER INDICATES PROJECT WELD NIBS FOR CRES SILVER PLATED PARTS ONLY (NO SILVER PLATE ON WELD NIBS).
“X” IN PLACE OF DASH INDICATES CADMIUM PLATED NUTS WITHOUT DRY FILM LUBRICANT.
EXAMPLES OF PART NUMBERS:
NAS1 775 C4MK
DASH NUMBER (SEE TABLE I)
INCLUDES:
MATERIAL CODE (SEE CODE SECTION) AND
FINISH CODE (SEE CODE SECTION) AND
LUBRICATION CODE (SEE CODE SECTION) AND
RIVET HOLES CODE (SEE CODE SECTION) BASIC NUMBER
STEEL
NAS1 775-4 = .2500-28UNJF-3B THREAD, PLAIN RIVET HOLES, CADMIUM PLATED WITH DRY FILM LUBRICANT.
NAS1 775-4K = .2500-28UNJF-3B THREAD, DIMPLED RIVET HOLES, CADMIUM PLATED WITH DRY FILM LUBRICANT.
NAS1 775X4 = .2500-28UNJF-3B THREAD, DIMPLED RIVET HOLES, CADMIUM PLATED AND WITHOUT DRY FILM LUBRICANT.
NAS1 775X4K = .2500-28UNJF-3B THREAD, DIMPLED RIVET HOLES, CADMIUM PLATED AND WITHOUT DRY FILM LUBRICANT CRES
NAS1 775C4 = .2500-28UNJF-3B THREAD, PLAIN RIVET HOLES, SILVER PLATED.
NAS1 775C4K = .2500-28UNJF-3B THREAD, DIMPLED RIVET HOLES, SILVER PLATED.
NAS1 775C4W = .2500-28UNJF-3B THREAD, WELD NIBS, SILVER PLATED.
NAS1 775C4M = .2500-28UNJF-3B THREAD, PLAIN RIVET HOLES, DRY FILM LUBRICATED.
NAS1 775C4MK = .2500-28UNJF-3B THREAD, DIMPLED RIVET HOLES, DRY FILM LUBRICATED.

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