AIA/NAS 6203-6220:2009 pdf download BOLT, TENSION, HEX HEAD, CLOSE TOLERANCE, ALLOY STEEL, SHORT THREAD, REDUCED MAJOR THREAD DIA., SELF-LOCKING AND NONLOCKING, 1 60 KSI Ftu
MATERIAL:
HEAT TREAT:
FINISH:
ALLOY STEEL – 4140 (UNS G41400) PER AMS6349 OR AMS6382, 4340 (UNS G43406) PER AMS6415OR AMS6484 OR 8740(UNS G87400) PER AMS6322 OR M-S-6049.LOCKING ELEMENT – NYLON OR EQUIVALENT PER MIL-DTL-18240 AND QPL-18240.
DEVELOP BASIC MATERIAL PROPERTIES AS FOLLOWS,WITH CONTROLS PER AMS-H-6875 ORAMS2759:160 -180 KSI Ftu
CADMIUM PLATED BOLTS – CADMIUM PLATE PER AMS-QQ-P-16.TYPE CLASS 2. EMBRITTLEMENTREQUIREMENT PER NAS4002
CHROMIUM PLATED BOLTS – CHROMIUM PLATE PER AMS-QQ-C-320. CLASS 2 ON SHANK ONLY. ALLOTHER SURFACES CADMIUM PLATED. NO CHROMIUM WITHIN .020 OF LINE OF TANGENCY OF HEADTO SHANK FILLET. CHROMIUM IN THREAD RUNOUT PERMITTED. CHROMIUM PLATED BOLTS NOTAVAILABLE WITH GRIP DASH NUMBER 1 OR NUMBER 2.
CODE:
NO FINISH CODE AFTER BASIC NUMBER FOR CADMIUM PLATED BOLTSADD“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.GRIP DASH NUMBER INDICATES GRIP IN .0625 NCREMENTS (CONVERTED TO THREE DECIMAL PLACESPER ANSI Y14.5-1982) SEE TABLE II FOR TABULATIONS OF GRIP AND LENGTH DIMENSIONS/15/ADD “D” AFTER GRIP DASH NUMBER FOR DRILLED SHANK BOLTS.DO NOT USE WITH “L” OR “P” CODE112/
ADD”H”AFTER GRIP DASH NUMBER FOR BOLT WITH DRILLED HEADCODE LETTER “X” ND“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.)
NAS6204-10
BOLT，.2500-28 THREAD，.625 GRIP,UNDRILLED,NONLOCKING,CADMIUMPLATED.BOLT，.2500-28 THREAD，.625 GRIP,DRILLED SHANK,NONLOCKINGCADMIUMPLATED.BOLT，.2500-28 THREAD，.625 GRIP，DRILLED SHANK,DRILLED HEAD,NONLOCKING，CADMIUM PLATED.BOLT，.2500-28 THREAD，.625 GRIP，DRILLED HEAD,UNDRILLED SHANKNONLOCKING.CHROMIUM PLATED.BOLT,.2500-28 THREAD，.625 GRIP,UNDRILLED,SELF-LOCKING (LOCKING TYPEOPTIONAL)，CADMIUM PLATED.BOLT,.2500-28 THREAD，.625 GRIP，UNDRILLED,SELF-LOCKING (PATCH TYPE)NAS6204P10JCADMIUM PLATED.NAS6204C10BOLT..2500-28 THREAD，.625 GRIP.UNDRILLED,NONLOCKINGCHROMIUM
NOTES:
GRIP LENGTH: FROM UNDER SIDE OF HEAD TO END OF FULL CYLINDRICAL PORTION OF SHANK
REFERENCE DIMENSIONS ARE FOR DESIGN PURPOSES ONLY AND ARE NOT AN INSPECTION
REQUIREMENT
BEARING SURFACE SQUARENESS: WITHIN .003 FIM OF“OD”
CONCENTRICITY: “ODAND MAJOR THREAD DIA WITHIN “AA VALUES FIM.“ODAND“OE” WITHIN“CC”VALUES FIM.
SHANK STRAIGHTNESS: WITHIN“BB”VALUES FIM PER INCH OF LENGTH.
PROTRUSION OF LOCKING ELEMENT SHALL BE CONTROLLED SO THAT IT WILL PASS FREELY. OR WITH6FINGER PRESSURE THROUGH A RING GAGE WITH DIAMETER OF 010 (-.001 -.000) GREATER THANMAXIMUM MAJOR DIAMETER OF BOLT THREAD.

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