AIA/NAS 6403-6420-2009 pdf download BOLT, TENSION, HEX HEAD, CLOSE TOLERANCE, 6AL-4V TITANIUM ALLOY, SHORT THREAD, REDUCED MAJOR THREAD DIAMETER, SELF-LOCKING AND NONLOCKING, 1 60 KSI Ftu
CODE: ADD “A” AFTER BASIC NUMBER FOR ALUMINUM COATED BOLTS. MAY BE USED WITH “D”, “H”, “L” OR “P” CODE.
ADD “L” AFTER BASIC NUMBER FOR SELF-LOCKING BOLT WITH LOCKING ELEMENT TYPE OPTIONAL;
SEE PROCUREMENT SPEC BELOW. DO NOT USE “L” WITH “D” OR “P” CODE.
ADD “P” AFTER BASIC NUMBER FOR SELF-LOCKING BOLT WITH PATCH TYPE LOCKING ELEMENT ONLY;
SEE PROCUREMENT SPEC BELOW. DO NOT USE “P” WITH “D” OR “L” CODE.
ADD “U” AFTER BASIC NUMBER FOR UNPLATED BOLT. MAY BE USED WITH “D”, “H”, “L” OR “P” CODE.
GRIP DASH NUMBER INDICATES GRIP IN .0625 INCREMENTS (CONVERTED TO THREE DECIMAL PLACES PER ANSI Y1 4.5-1 982). SEE TABLE II FOR TABULATIONS OF GRIP AND LENGTH DIMENSIONS./1 5/
ADD “D” AFTER GRIP DASH NUMBER FOR DRILLED SHANK BOLTS. DO NOT USE WITH “L” OR “P” CODE./1 2/
ADD “H” AFTER GRIP DASH NUMBER FOR BOLT WITH DRILLED HEAD.
CODE LETTER “X” AND “Y” FOLLOWING THE GRIP DASH NUMBER INDICATES REPLACEMENT OVERSIZE REPAIR BOLT. (SEE LAST SHEET)
IF MORE THAN ONE CODE LETTER IS USED IN SEQUENCE, ARRANGE THE LETTERS ALPHABETICALLY.
EXAMPLE OF PART NUMBER: (SEE LAST SHEET FOR OVERSIZE BOLTS.)
NAS6404U1 0 = BOLT, .2500-28 THREAD, .625 GRIP, UNDRILLED, NONLOCKING, UNPLATED.
NAS6404A1 0 = BOLT, .2500-28 THREAD, .625 GRIP, UNDRILLED, NONLOCKING, ALUMINUM COATED.
NAS6404U1 0D = BOLT, .2500-28 THREAD, .625 GRIP, DRILLED SHANK, UNDRILLED HEAD,NONLOCKING, UNPLATED.
NAS6404U1 0H = BOLT, .2500-28 THREAD, .625 GRIP, DRILLED HEAD, UNDRILLED SHANK,NONLOCKING, UNPLATED.
NAS6404U1 0DH = BOLT, .2500-28 THREAD, .625 GRIP, DRILLED SHANK, DRILLED HEAD,NONLOCKING, UNPLATED.
NAS6404LU1 0 = BOLT, .2500-28 THREAD, .625 GRIP, UNDRILLED, SELF-LOCKING (LOCKING TYPE OPTIONAL; SEE PROCUREMENT SPEC BELOW), UNPLATED.
NOTES:
/1 / GRIP LENGTH: FROM UNDER SIDE OF HEAD TO END OF FULL CYLINDRICAL PORTION OF SHANK.
/2/ REFERENCE DIMENSIONS ARE FOR DESIGN PURPOSES ONLY AND ARE NOT AN INSPECTION REQUIREMENT.
/3/ BEARING SURFACE SQUARENESS: WITHIN .003 FIM OF “ØD”.
/4/ CONCENTRICITY: “ØD” AND MAJOR THREAD DIA WITHIN “AA” VALUES FIM. “ØD” AND “ØE” WITHIN “CC” VALUES FIM.
/5/ SHANK STRAIGHTNESS: WITHIN “BB” VALUES FIM PER INCH OF LENGTH.
/6/ PROTRUSION OF LOCKING ELEMENT SHALL BE CONTROLLED SO THAT IT WILL PASS FREELY, OR WITH FINGER PRESSURE, THROUGH A RING GAGE WITH DIAMETER OF .01 0 (+.001 , -.000) GREATER THAN MAXIMUM MAJOR DIAMETER OF BOLT THREAD.
/7/ “X” MIN (5 THREAD PITCHES) = REGION OF MINIMUM ENGAGEMENT WITH FEMALE THREAD REQUIRED TO MEET MIL-DTL-1 8240 REQUIREMENTS. LOCKING ELEMENT WITHIN “X” REGION MUST DEVELOP REQUIRED TORQUE WHEN TESTED PER MIL-DTL-1 8240.
/8/ FOR EASE IN STARTING, LOCKING ELEMENT SHALL NOT BE EFFECTIVE IN “Y” AREA (3 THREAD PITCHES).
/9/ “ØP” HOLE CENTERLINE WITHIN .01 0 AND NORMAL WITHIN 2º OF BOLT CENTERLINE.
/1 0/ “ØC” MAX NOT TO EXCEED ACTUAL WIDTH ACROSS FLATS; MIN AS TABULATED IN TABLE I.
(1 1 ) CADMIUM PLATED TITANIUM ALLOY INACTIVE FOR NEW DESIGN AFTER DEC. 1 991 .

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