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THREAD: AS8879
MATERIAL:
  • Nut - carbon steel, heat treated.
  • Channel - 2024 or 7075 aliminium alloy alclad.
FINISH:
  • Nut

    • No Code - Cadmium plate per fed. spec. AMS-QQ-P-416, Type II, Class 2, plus Kaylube molybdenum disulfide dry lubricant coated per AS5272 Type I.
    "CW" Code - Cadmium plate per fed. spec. AMS-QQ-P-416, Type II, Class 2 plus carbowax.
    "X" Code - Cadmium plate per fed. spec. AMS-QQ-P-416, Type II, Class 2, no additional lubricant.
  • Channel

    • No Code - None
    "A" Code - Anodize per MIL-A-8625, Type II, Class 2, blue color
    "D" Code - Anodize per MIL-A-8625, Type II, Class 1, neutral color.
PERFORMANCE: NASM25027.
FLOATABILITY: From center of hole: longitudinally - .030 min, laterally - .010 min.
TEMPERATURE:
Channel - 250°F
Nut - 450°F
NOTES: All nut locations located within .010 rad of true position.
Unit of Measure

D - MIN

 N/A 0.254

F - REF

 N/A 0.189

H - MAX

 N/A 0.531

M - MIN

 N/A 0.312

P - REF

 N/A 0.312

V - REF

 N/A 0.032

W - MAX

 N/A 0.516

X

 N/A 0.430-0.400

Y

 N/A 0.670-0.640

Min Nut Spacing

 N/A 0.750

Approx. Nut Weight (LBS/100)

 N/A 0.58

Approx. Channel Weight (LBS/INCH)

 N/A 0.0029

S - Nut Spacing

 N/A 1.250

Max. No. of Nuts

 N/A 57

Nut Finish

 N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 2, plus Kaylube Molybdenum Disulfide Dry Film Lubricant Coat per AS5272, Type I

Channel Finish

 N/A Anodize per MIL-A-8625, Type II, Class 1, Neutral Color

Thread

 N/A 0.2500-28 UNJF-3B