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THREAD: AS8879
MATERIAL:
  • Channel - 2024 aluminum alloy alclad per AMS 4040 (UNS A82024) or 7075 aluminum alloy per AMS 4048 (UNS A87075).
  • Nut - C1050 carbon steel per AMS 5085 (UNS G1050).
FINISH:
  • Channel - None
  • Nut - Cadmium plate per AMS-QQ-P-416, Type II, Class 2 and Kaylube molybdenum disulfide dry lubricant per AS5272, Type I.
PERFORMANCE: NASM25027.
FLOATABILITY: From center line of hole - circumferentially .030 min., radially .01 min.
Unit of Measure

Specifications

D - MIN

 N/A 0.254

F - REF

 N/A 0.188

H - MAX

 N/A 0.281

P - REF

 N/A 0.312

V - REF

 N/A 0.032

W - MAX

 N/A 0.516

Cut Off - MIN

 N/A 0.406

Nominal Nut Spacing

 N/A 1 3/8

R

 N/A 3.625

S - Nut Spacing

 N/A 1.414

No. of Nuts

 N/A 8

Approx. Nut Weight (LBS/100)

 N/A 0.29

Approx. Channel Weight (LBS/INCH)

 N/A 0.0031

Thread

 N/A 0.2500-28 UNJF-3B