AIA/NAS-1669-2010 pdf download FASTENER, BLIND, INTERNALLY THREADED, EXTERNAL SLEEVE, GENERAL PURPOSE, PROTRUDING HEAD, SELF-LOCKING
MATERIAL:
FINISH:
LUBRICANT:
CODE:
NUT – ALLOY STEEL
SCREW – ALLOY STEELSLEEVE – CORROSION RESISTANT STEELDRIVE NUT – MILD STEEL
SEE PROCUREMENT SPECIFICATION(CLASS 1)
DRIVE NUT – COLOR CODED GOLD.
NUT,SCREW & SLEEVE – CADMIUM PLATE SEE PROCUREMENT SPECIFICATION.
SEE PROCUREMENT SPECIFICATION.
FIRST DASH NUMBER DESIGNATES FASTENER DIAMETER AS SHOWN IN TABLE I.SECOND DASH NUMBER DESIGNATES FASTENER GRIP AS SHOWN IN TABLE IIADD “K” BETWEEN FIRST AND SECOND DASH NUMBER TO DESIGNATE MILLED DRIVING FLATS ONSEREW(INACTIVE FOR NEW DESIGN)ADD “W”BETWEEN FIRST AND SECOND DASH NUMBER TO DESIGNATE DRIVING SPLINES ONSEREWW:(INACTIVE FOR NEW DESIGN)NO LETTER BETWEEN FIRST AND SECOND DASH NUMBER DESIGNATES OPTIONAL DRIVINGPROVISIONS(INACTIVE FOR NEW DESIGN)ADD “L” BETWEEN FIRST AND SECOND DASH NUMBER TO DESIGNATE FASTENER WITH SELF-LOCKINGPROVISIONS.ADD DL” BETWEEN FIRST AND SECOND DASH NUMBER TO DESIGNATE FASTENER WITH SELF-LOCKINGPROVISIONS AND DRIVE NUT FEATURE
INTERCHANGEABILITY:
THE “DL” CODE FASTENERS (DRIVE NUT) AND “L” CODE FASTENERS (NO DRIVE NUT)AREFUNCTIONALLY INTERCHANGEABLE. THERE IS NO DIFFERENCE IN INSTALLED CONDITION.”DL”PARTS USE EXISTING INSTALLATION TOOLING EXCEPT A NEW HEX NOSE ADAPTOR IS REOUIREDFOR THE -5DL SIZE THE NOSE ADAPTOR CURRENTLY USED TO INSTALL NAS1669-4L ANDNAS1671-4L HEX HEAD PARTS IS USED TO INSTALL-08DL,-3DL AND 4DL SIZES.THE -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

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