AIA/NAS 5317-2013 pdf download SCREW, PAN HEAD, FULL THREAD, SELF-LOCKING AND NON-LOCKING, NAS1 800 SIX LOBE RECESS
MATERIAL: CRES − A286 (UNS S66286) CONFORMING TO THE CHEMISTRY OF AMS5731, AMS5732,AMS5737 OR AMS5853.
TITANIUM ALLOY − 6AL-4V (UNS R56400) PER AMS4928 OR AMS4967.
LOCKING ELEMENT − POLYETHYLENE TEREPHTHALATE (POLYESTER) PER AMS3612, OR POLYAMIDE-IMIDE PER AMS3670, COLOR OPTIONAL, 400 °F MAX. LOCKING TORQUE APPLICABLE FOR 5 TORQUE CYCLES.
HEAT TREATMENT: DEVELOP BASIC MATERIAL PROPERTIES AS FOLLOWS, WITH CONTROLS PER AMS-H-6875 OR AMS2759 FOR CRES AND AMS-H-81200 OR AMS2801 FOR TITANIUM.
CRES: 160 – 190 KSI FTU. PRECIPITATION HARDENING PER AMS5853 OR AMS2759. /12/
TITANIUM (6AL-4V): 160 KSI FTU MIN.
FINISH: CRES – PASSIVATE IN ACCORDANCE WITH AMS2700, METHOD 1, CLASS 4
OR CADMIUM PLATE PER AMS-QQ-P-416, TYPE II, CLASS 2.
TITANIUM ALLOY – NONE OR ALUMINUM PIGMENTED COATING PER NAS4006 WITH CETYL ALCOHOL LUBRICANT PER AS87132, TYPE III, GRADE B.
CODE: BASIC PART NUMBER = PAN HEAD SCREW, NAS1800 SIX LOBE RECESS MATERIAL CODE AFTER BASIC NUMBER:
ADD “E” FOR CRES.
ADD “V” FOR TITANIUM.
DIAMETER DASH NUMBER DESIGNATES DIAMETER AND THREAD PER TABLE I.