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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

0.380

F - REF

0.250

H - MAX

0.677

M - MIN

0.375

P - REF

0.437

V - REF

0.050

W - MAX

0.710

X

0.550-0.520

Y

0.790-0.760

Min Nut Spacing

1.000

Approx. Nut Weight (LBS/100)

1.27

Approx. Channel Weight (LBS/INCH)

0.0054

S - Nut Spacing

1.125

Max. No. of Nuts

64

Nut Finish

Cadmium Plate per AMS-QQ-P-416, Type II, Class 2, plus Carbowax

Channel Finish

None

Thread

0.3750-24 UNJF-3B