AIA/NAS 509-2012 pdf download NUT, DRILLED JAM
MATERIAL:
STEEL, 4130 (UNS G41300) PER MIL-S-6758 AMS-S-6758, CONDITION F-4.
CRES, A286 (UNS S66286) PER AMS5525, AMS5732, OR AMS5737.
HEAT TREATMENT:
DEVELOP BASIC MATERIAL PROPERTIES AS FOLLOWS, WITH CONTROLS PER AMS2759:
STEEL, 34-38 HRC (150 KSI MIN TENSILE STRENGTH).
CRES, 150 KSI MIN TENSILE STRENGTH.
FINISH:
STEEL, CADMIUM PLATE PER AMS-QQ-P-416, TYPE II, CLASS 2. PARTS ALREADY MADE WITH CLASS 3 PLATING MAY BE FURNISHED FROM SUPPLIERS’ STOCK UNTIL 15 SEPT. 1974.
CRES, PASSIVATE PER AMS2700, METHOD 1, CLASS 4.
CODE:
DASH NUMBER DESIGNATES THREAD SIZE AS NOTED IN TABLE I.
SUFFIX “L” TO BASIC PART NUMBER FOR LEFT HAND THREAD.
SUFFIX “C” TO DASH NUMBER FOR A286 CRES MATERIAL.
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