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THREAD: AS8879
MATERIAL:
  • Nut - C1050 carbon steel per AMS 5085 (UNS G10500), heat treated.
  • Channel - 2024 aluminum alloy alclad per AMS4040 (UNS A82024).
FINISH:
  • Nut

  • G1000-(*)-(*) - Cadmium plate per AMS-QQ-P-416, Type II, Class 2, plus Kaylube molybdenum disulfide dry film lubricant coat per AS5272.
    G1000-(*)-(*)CW - Cadmium plate per AMS-QQ-P-416, Type II, Class 2, plus carbowax.
    G1000-(*)-(*)X - Cadmium plate per AMS-QQ-P-416, Type II, Class 2.
  • Channel

  • G1000-(*)-(*) - None
    G1000-(*)A(*) - Anodize per MIL-A-8625, Type II, Class 2, blue color.
    G1000-(*)D(*) - Anodize per MIL-A-8625, Type II, Class 1, neutral color.
    G1000-(*)P(*) - Alodine per MIL-C-5541, plus primer per BMS10-11, grade E, green color (see note 2).
PERFORMANCE: NASM25027.
TEMPERATURE: 250°F, based on use of aluminium alloy channel.
NOTES:
  1. Floatability from centered position - longitudinally .030 min., laterally .010 min.
    Method of nut retention, manufacturer's option.
  2. Localized alodine and primer chipping at the locations of the lance to retain nut is acceptable. (applies to "P" coded channel only).
Unit of Measure

Specifications

D - MIN

N/A 0.254

F - REF

N/A 0.188

H - MAX

N/A 0.281

M - MIN

N/A 0.062

P - REF

N/A 0.312

V - REF

N/A 0.032

W - MAX

N/A 0.516

Min. Nut Spacing

N/A 0.750

Cut Off - MIN

N/A 0.406

S - Nut Spacing

N/A 0.875

Max. No. of Nuts

N/A 82

Approx. Nut Weight (LBS/100)

N/A 0.30

Approx. Channel Weight (LBS/INCH)

N/A 0.0029

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

Channel Finish

N/A None

Thread Type

N/A Unified

Configuration 1

N/A Straight

Simplified Material

N/A Aluminum

Strength

N/A 125KSI - 900Mpa

Temperature

N/A 250°F - 120°C

Thread

N/A 0.2500-28 UNJF-3B