AIA/NAS 75-2010 pdf download BUSHING, PLAIN PRESS FIT, STEEL OR CRES
MATERIAL:
ALLOY STEEL – 41 30 (UNS G41 300) PER MIL-S-6758 AMS-S-6758, OR 8630 (UNS G86300) PER MIL-S-6050 AMS6280 OR EQUIVALENT. HEAT TREATED TO 1 25,000 – 1 45,000 PSI. SEAMLESS ALLOY STEEL TUBING MAY BE USED AS AN OPTIONAL MATERIAL PROVIDED THE FINISHED PRODUCT MEETS ALL OTHER REQUIREMENTS OF THIS DRAWING.
CRES 1 7–4PH PER AMS5643 (UNS S1 7400), PRECIPITATION HEAT TREAT PER AMS-H-6875 TO CONDITION H 1 025.
FINISH:
ALLOY STEEL CADMIUM PLATING PER AMS-QQ-P-41 6, TYPE II, CLASS 2.
CRES, PASSIVATION PER AMS2700, METHOD 1 , CLASS 4
CODE “A”, ALUMINUM COAT PER NAS4006, OUTSIDE DIAMETER ONLY, NO OVERSPRAY.
CODE:
LENGTH TO BE SPECIFIED IN INCHES AND 1 /32 OF AN INCH.
NAS75 – (SIZE DASH NO.) – (LENGTH DASH NO.)
EXAMPLE OF PART NUMBER:
N A S 7 5 – 8 – 3 1 5
LENGTH IN 1 /32 OF AN INCH
LENGTH IN INCHES. ZERO (0) IF LESS THAN ONE INCH
“-“ = NO ALUMINUM COAT
“A” = ALUMINUM COAT
INSIDE DIAMETER “A” IN 1 6th INCH INCREMENTS
“-“ = ALLOY STEEL, CADMIUM PLATED
“C” = CRES, PASSIVATED
BASIC PART NO.
EXAMPLES:
NAS75-8-009 = STEEL BUSHING, .500 INSIDE DIA., 9/32 LONG.
NAS7S-8-01 5 = STEEL BUSHING, .500 INSIDE DIA., 1 5/32 LONG.
NAS75-8-309 = STEEL BUSHING, .500 INSIDE DIA., 3 AND 9/32 LONG.
NAS75C8A31 6 = CRES BUSHING, .500 INSIDE DIA., ALUMINUM COAT, 3 AND 1 /2 LONG.

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