AIA/NAS 6303-6320-2009 pdf download BOLT, TENSION, HEX HEAD, CLOSE TOLERANCE, A286 CRES, SHORT THREAD, REDUCED MAJOR THREAD DIA., SELF-LOCKING AND NONLOCKING, 1 60 KSI Ftu
MATERIAL: CRES – A286 (UNS S66286) CONFORMING TO THE CHEMISTRY OF AMS5731 , AMS5732, AMS5737 OR AMS5853.
LOCKING ELEMENT – NYLON OR EQUIVALENT PER MIL-DTL-1 8240 AND QPL-1 8240.
HEAT TREAT: DEVELOP BASIC MATERIAL PROPERTIES AS FOLLOWS, WITH CONTROLS PER AMS-H-6875 OR AMS2759: /1 9/
1 60 – 1 90 KSI Ftu
FINISH: UNPLATED – PASSIVATED PER AMS2700, METHOD 1 , TYPE 2 OR TYPE 8, CLASS 1 .
CADMIUM PLATED – CADMIUM PLATE PER AMS-QQ-P-41 6, TYPE II, CLASS 2. IDENTIFY WITH GREEN DYE OR PAINT ON THE THREAD END. MAXIMUM COVERAGE MAY INCLUDE THE CHAMFER PLUS ONE INCOMPLETE THREAD.
CHROMIUM PLATED – CHROMIUM PLATE PER AMS-QQ-C-320, CLASS 2 ON SHANK ONLY. ALL OTHER SURFACES CADMIUM PLATED. NO CHROMIUM WITHIN .020 OF LINE OF TANGENCY OF HEAD TO SHANK FILLET. CHROMIUM IN THREAD RUNOUT PERMITTED. CHROMIUM PLATED BOLTS NOT AVAILABLE WITH GRIP DASH NUMBER 1 OR NUMBER 2.
ALUMINUM COATED – ALUMINUM COAT PER NAS4006.
CODE: NO FINISH CODE AFTER BASIC NUMBER FOR CADMIUM PLATED BOLTS.
ADD “A” AFTER BASIC NUMBER FOR ALUMINUM COATED BOLT. MAY BE USED WITH “D”, “H”, “L”, OR “P” CODE.
ADD “C” AFTER BASIC NUMBER FOR CHROMIUM PLATED BOLTS.
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 BOLTS.
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.)
NAS6304-1 0 = BOLT, .2500-28 THREAD, .625 GRIP, UNDRILLED, NONLOCKING, CADMIUM PLATED.
NAS6304U1 0 = BOLT, .2500-28 THREAD, .625 GRIP, UNDRILLED, NONLOCKING, UNPLATED.
NAS6304-1 0D = BOLT, .2500-28 THREAD, .625 GRIP, DRILLED SHANK, NONLOCKING, CADMIUM PLATED.
NAS6304-1 0DH = BOLT, .2500-28 THREAD, .625 GRIP, DRILLED SHANK, DRILLED HEAD,NONLOCKING, CADMIUM PLATED.
NAS6304C1 0H = BOLT, .2500-28 THREAD, .625 GRIP, DRILLED HEAD, UNDRILLED SHANK,NONLOCKING, CHROMIUM PLATED.

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