AIA/NAS 1734-2011 pdf download NUT, SELF-LOCKING, BLIND RIVET, ELLIPTICAL HEAD, 450 °F
MATERIAL:
CRES, TYPE 304 (UNS S30400) OR TYPE 305 (UNS S30500) PER AMS-QQ-S-763, COND A FINISH:
PASSIVATE PER AMS2700, METHOD 1, CLASS 4.
CADMIUM PLATE OUTSIDE SURFACE PER AMS-QQ-P-416, TYPE II, CLASS 2.
LUBRICATION:
DRY FILM PER NASM25027 ON THREADS ONLY (WHEN SPECIFIED).
THREADS:
AS8879 BEFORE LUBRICATION
CODE:
ADD “L” BETWEEN DASH NUMBERS FOR DRY FILM LUBRICANT.
ADD “P” AFTER SECOND DASH NUMBER FOR CADMIUM PLATE.
FIRST DASH NUMBER INDICATES THREAD SIZE.
SECOND DASH NUMBER INDICATES GRIP.
NAS1734-4 L 5 P
PLATING CODE (SEE CODE SECTION)
SECOND DASH NUMBER FROM TABLE IV
LUBRICATION CODE (SEE CODE SECTION)
FIRST DASH NUMBER FROM TABLE I
BASIC NUMBER
EXAMPLES OF PART NUMBERS:
NAS1734-4-6 .2500-28 NUT, .330 GRIP, PASSIVATED
NAS1734-4L6 .2500-28 NUT, .330 GRIP, PASSIVATED, THREADS LUBRICATED
NAS1734-4-6P .2500-28 NUT, .330 GRIP, PASSIVATED, CADMIUM PLATED.
NAS1734-4L6P .2500-28 NUT, .330 GRIP, PASSIVATED, LUBRICATED, CADMIUM PLATED.
NOTES:
(1) CONCENTRICITY: ALL DIAMETERS TO PITCH DIAMETER .010 FIM
/2/ FLUSHNESS CONTROLLED BY HEAD FACE TO GAGE SURFACE PER TABLE II.
(3) “Ø D” MAY INCREASE .0005 UNDER THE HEAD FOR A LENGTH EQUAL TO ONE HALF OF “Ø D”.
(4) “Ø D” MAY DECREASE .004 BEYOND THE MAXIMUM GRIP LENGTH.
(5) SURFACE TEXTURE: ALL NON-THREADED SURFACES SHALL NOT EXCEED 125 MICROINCHES PER ASME B46.1 NOTE: MINOR THREAD MARKINGS ON ID OF NUT PERMISSIBLE.
/6/ BREAK SHARP EDGE .0020/.0075. RADIUS NOT TO EXCEED “A” AND “B” DIMENSIONS. “B” MAX IS DETERMINED BY TABLE II AND EDGE RADIUS.
(7) TORQUE OUT VALUES SHOWN ARE FOR NUTS INSTALLED IN STEEL OR TITANIUM. NASM25027 TORQUE OUT VALUES APPLY FOR PLATED NUTS INSTALLED IN SOLUTION HEAT TREATED AND ARTIFICIALLY AGED 2000 AND 7000 SERIES ALUMINUM ALLOYS. NUTS SHALL BE CAPABLE OF MEETING THE TORQUE OUT VALUES INDICATED WHEN TESTED USING THE TEST SET-UP AND PROCEDURE IDENTIFIED HEREIN. THE BOLT SHALL BE TIGHTENED WHILE RESTRAINING THE SPACER UNTIL THE MINIMUM TORQUE OUT VALUE IS OBTAINED.
(8) REMOVE ALL BURRS AND SHARP EDGES.
/9/ MINIMUM DEPTH OF UNTHREADED PORTION OF INSTALLED NUT EQUALS MINIMUM MATERIAL THICKNESS PLUS “F” DIMENSION.
(10) RECOMMENDED FOR USE IN STEEL, TITANIUM AND HIGH STRENGTH ALUMINUM ALLOYS (2000 AND 7000 SERIES).
/11/ AS AN OPTION, TO ASSURE LEGIBILITY, THE PART NUMBER AND MANUFACTURER TRADEMARK MAY BE LOCATED ON THE FULL DIAMETER, “Ø D”, IMMEDIATELY ADJACENT TO THE LOCKING COLLAR.
(12) SEE NAS1732 FOR NUTS RECOMMENDED FOR USE IN MATERIALS OF HARDNESS 98HRB AND UNDER, AND ALSO, FOR SMALLER DIAMETER NUTS AND GRIP RANGES.
(13) SPOTFACE UNDER-SURFACE OF STRUCTURE IS REQUIRED FOR NUT BELLOWS IF THE ANGLE NORMAL TO THE CENTERLINE OF THE HOLE AND THE UNDERSTRUCTURE EXCEEDS 3 DEGREES.
(14) THESE NUTS ARE RECOMMENDED FOR USE IN FUEL TIGHT STRUCTURE.
(15) SEE NAS1736 FOR HOLE PREPARATION AND BLIND NUT INSTALLATION.

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