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THREAD: AS8879
MATERIAL:
  • Nut - C1050 carbon steel per AMS5085 (UNS G10500), heat treated, or alloy steel, heat treated.
  • Channel - 7075-T6 aluminium alloy alclad per AMS4048 (UNS A87075).
  • Clip - 18-2MN corrosion resistant steel per ASTM A 580.
FINISH:
  • Nut - Cadmium plate per AMS-QQ-P-416, Type II, Class 2, plus Kaylube molybdenum disulfide dry film lubricant coat per AS5272, Type I.
  • Channel - Anodize per MIL-A-8625, Type II, Class 1 (natural color).
  • Clip - Passivate per AMS2700.
PERFORMANCE: NASM25027, except push out and twist out as tabulated.
TEMPERATURE: 250°F, based on the use of aluminium channel.
NOTES:
  1. Floatability from centered position: longitudinally - .030 minimum, laterally - .015 minimum.
  2. For nonstandard length channel, bare end cut-offs to be touched up per MIL-C-5541.
  3. Dimensioning and tolerancing per ASME Y14.5M-1994.
Unit of Measure

B - REF

N/A 0.710

D - MIN

N/A 0.317

F - MAX

N/A 0.344

H - MAX

N/A 0.344

M - MIN

N/A 0.070

P - MIN

N/A 0.391-0.371

V - REF

N/A 0.050

W - MAX

N/A 0.640

Cut Off - MIN

N/A 0.469

Push Out (LBS. MIN)

N/A 250

Twist Oout (LBS-IN MIN)

N/A 280

S - Nut Spacing

N/A 1.125

No. of Nuts

N/A 64

Approx. Nut & Clip Weight (LBS/100)

N/A 0.63

Approx. Channel Weight (LBS/INCH)

N/A 0.0055

Thread Type

N/A Unified

Configuration 1

N/A Straight

Configuration 2

N/A Replaceable Nut

Simplified Material

N/A Aluminum

Strength

N/A 125KSI - 900Mpa

Temperature

N/A 250°F - 120°C

Thread

N/A 0.3125-24 UNJF-3B