AIA/NAS 578-2012 pdf download RETAINER, FLOATING BARREL NUT
MATERIAL:
“-” CODE: AISI 1050 (UNS G10500) OR AISI 1060 (UNS G10600) STEEL.
“C” CODE: INCONEL X 750 NICKEL ALLOY (UNS N07750) PER AMS5542.
FINISH:
STEEL: CADMIUM PLATE PER AMS-QQ-P-416, TYPE II, CLASS 2.
INCONEL X 750 NICKEL ALLOY: PASSIVATE PER AMS2700, METHOD 1, TYPE 2 OR 8, CLASS 4.
HEAT TREATMENT:
STEEL: 40-49 HRC.
INCONEL X 750 NICKEL ALLOY: PRECIPITATION HARDEN IN ACCORDANCE WITH AMS5542.
150 KSI ULTIMATE TENSILE STRENGTH MINIMUM.
CODE:
“A” CODE: INDEX TYPE RETAINER.
“B” CODE: CLEARANCE TYPE RETAINER.
EXAMPLE OF PART NUMBER:
NAS578 – 8 A = INDEX TYPE STEEL RETAINER, FOR BARREL NUT NAS577B8( )
STYLE TYPE
DASH NUMBER
MATERIAL CODE
BASIC NUMBER
NAS578-8B = CLEARANCE TYPE STEEL RETAINER, FOR BARREL NUT NAS577B8( )
NAS578C8A = INDEX TYPE X 750 NICKEL ALLOY RETAINER, FOR BARREL NUT NAS577C8( )
NAS578C8B = CLEARANCE TYPE INCONEL X 750 NICKEL ALLOY RETAINER, FOR BARREL NUT NAS577C8( )

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