AIA/NAS 1752-2010 pdf download FASTENER, BLIND, INTERNALLY THREADED, EXTERNAL SLEEVE, HIGH TEMPERATURE, FLUSH HEAD, SELF-LOCKING, 1 /64″ OVERSIZE
MATERIAL:
FINISH:
NUT,SCREW & SLEEVE – A-286 HEA RESISTANT STEEL SEE PROCUREMENT SPECIFICATION.(CLASS 2)DRIVE NUT – MILD STEEL.
DRIVE NUT – COLOR CODED BLACK.
NUT, SCREW 8 SLEEVE – PASSIVATE,SEE PROCUREMENT SPECIFICATION
LUBRICATION:
CODE:
SEE PROCUREMENT SPECIFICATION: GRAPHITE FREE DRY FILM PER MIL-PRF-81329 OR DRY FILM TOCHEMICAL REQUIREMENTS OF AS5272 WITH A TOTAL WEIGHT LOSS (TWL) LESS THAN 1% AND LESSTHAN 1% VOLATILE CONDENSABLE MATERIALS (VCM) WHEN TESTED IN ACCORDANCE WITH NASASPECIFICATION SP-R-0022 OR ASTM E 595./12/ /13/ /14/
FIRST DASH NUMBER DESIGNATES FASTENER DIAMETER AS SHOWN IN TABLE ISECOND DASH NUMBER DESIGNATES FASTENER GRIP AS SHOWN IN TABLE ILETTER “L” BETWEEN FIRST AND SECOND DASH NUMBER DESIGNATES FASTENER WITH SELF-LOCKINGPROVISIONS.ADD DL” BETWEEN FIRST AND SECOND DASH NUMBER TO DESIGNATE FASTENER WITH SELF-LOCKINGPROVISIONS AND DRIVE NUT FEATURE.ADD B AFTER SECOND DASH NUMBER TO DESIGNATE GRAPHITE FREE DRY FILM LUBRICANT PERMIL-PRF-81329./12//14/ADD “U” AFTER SECOND DASH NUMBER TO DESIGNATE DRY FILM LUBRICANT TO THE CHEMICALREQUIREMENTS OF AS5272./13/ /14/
NO CODE AFTER SECOND DASH UMBER DESIGNATES LUBRICANTS (PARAFFIN WAX,CETYL ALCOHOLETC.) AS REQUIRED TO MEET PERFORMANCE REQUIREMENTS
INTERCHANGEABILITY:
THE”DL” CODE FASTENERS (DRIVE NUT) AND “L” CODE FASTENERS (NO DRIVE NUT) AREFUNCTIONALLY INTERCHANGEABLE. THERE IS NO DIFFERENCE IN INSTALLED CONDITION.”DLPARTS USE EXISTING INSTALLATION TOOLING EXCEPTANEW HEX NOSE ADAPTOR IS REQUIREDFOR THE -5DL SIZETHE NOSE ADAPTOR CURRENTLY USED TO INSTALL NAS1669-4L ANDNAS1671-4L HEX HEAD PARTS IS USED TO INSTALL -08DL,-3DL AND -4DL SIZESTHE -6DL SIZEIS INSTALLED WITH THE SAME NOSE ADAPTOR CURRENTLY USED TO INSTALL NAS1669-6L ANDNAS1671-6L HEX HEAD FASTENERS. THE WRENCH ADAPTORS WHICH ENGAGE AND ROTATE THESCREW DRIVING FLATS DURING INSTALLATION ARE THE SAME FOR “L” AND DL” CODEFASTENERS. THE DL” CONFIGURATION IS CONSIDERED THE PREFERRED FASTENER SYSTEM.
EXAMPLE
NAS1752-3L5 = HIGH TEMPERATURE BLIND FASTENER, FLUSH HEAD WITH A SHANK DIAMETER OF.2140 AND GRIP OF .282 – 344 AND SELF-LOCKING FEATURE,1/64 OVERSIZE
NAS1752-4DL6 = HIGH TEMPERATURE BLIND FASTENER, FLUSH HEAD WITH A SHANK DIAMETER OF.2750 AND GRIP OF .345 – .406, SELF-LOCKING FEATURE AND DRIVE NUT FEATURE,1/64 OVERSIZE
NAS1752-4DL6B = HIGH TEMPERATURE BLIND FASTENER,FLUSH HEAD WITH A SHANK DIAMETER OF.2750 AND A GRIP OF .345 – ,406, SELF LOCKING AND DRIVE NUT FEATURE ANDGRAPHITE FREE DRY FILM LUBE PER MIL-PRF-81329/64 OVERSIZE
NOTES: (1) “G” IS THE MEAN DIMENSION TO THE NUT NOSE ANGLE INTERSECTION. THIS INTERSECTION LOCATION MAY VARY AROUND THE PERIPHERY DUE TO ECCENTRICITY.
(2) PARTS SHALL BE FREE OF ALL LOOSE OR HANGING BURRS.
(3) OUTSIDE DIAMETER OF HEAD OF SCREW AND OUTSIDE DIAMETER OF SLEEVE SHALL NOT BE GREATER THAN MAXIMUM “ØD”.
(4) CONCENTRICITY OF NUT HEAD CONICAL SURFACE TO “ØD” SHALL BE WITHIN .005 FIM, EXCEPT IN SELF-LOCKING AREA. /9/
(5) TEMPERATURE LIMITATION: 1200°F MAX.

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