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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 0.380

F - REF

N/A 0.250

H - MAX

N/A 0.427

M - MIN

N/A 0.125

P - REF

N/A 0.437

V - REF

N/A 0.050

W - MAX

N/A 0.710

X

N/A 0.550-0.520

Y

N/A 0.790-0.760

Min Nut Spacing

N/A 1.000

Approx. Nut Weight (LBS/100)

N/A 1.01

Approx. Channel Weight (LBS/INCH)

N/A 0.0054

S - Nut Spacing

N/A 1.375

Max. No. of Nuts

N/A 52

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 0.3750-24 UNJF-3B