AIA/NAS 6203-6220-2013 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: ALLOY STEEL – 41 40 (UNS G41 400) PER AMS6349 OR AMS6382, 4340 (UNS G43406) PER AMS641 5 OR AMS6484 OR 8740 (UNS G87400) PER AMS6322 OR MIL-S-6049,
AMS6325 OR AMS6327.
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 60 – 1 80 KSI Ftu
FINISH: CADMIUM PLATED BOLTS – CADMIUM PLATE PER AMS-QQ-P-41 6, TYPE II, CLASS 2. EMBRITTLEMENT REQUIREMENT PER NAS4002.
CHROMIUM PLATED BOLTS – 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.
CODE: NO FINISH CODE AFTER BASIC NUMBER FOR CADMIUM PLATED BOLTS.
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.

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