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THREAD: AS8879
MATERIAL:
  • Nut - 7075 aluminum alloy per AMS-QQ-A-225/9. Aged to T73 condition.
  • Seal - Teflon per MIL-P-19468.
FINISH: Nut - Anodize per MIL-A-8625, Type II, Class 2, color black, plus K76 lubricant.
PERFORMANCE: NASM25027, except as follows:
  • 1 cycle use.
  • Maximum locking torque and axial tensile strength to be met when tested with aluminum IVD coated titanium bolts with AS8879 threads having reduced major diameter.
  • Wrench torque as tabulated.
PACKAGING: Parts are normally supplied in bulk packaging. Add "S" after dash number for spindle packaged nuts for use with K-Fast automatic tools. Example: KFN627-4S.
NOTES:
  1. "C" and "W" dimensions apply before forming self-locking feature.
  2. Nut design incorporates positive retention of the sealing ring.
Unit of Measure

Specifications

A - MAX

N/A 0.510

B - MIN

N/A 0.254

C - MIN

N/A 0.348

D

N/A 0.261-0.256

H - MAX

N/A 0.280

M

N/A 0.100-0.090

P

N/A 0.343-0.337

Q

N/A 0.045-0.025

W

N/A 0.313-0.305

Max. Locking Torque

N/A 20.000 lb·in

Axial Tensile Strength (LBS. MIN)

N/A 3200

Min. Wrench Torque (IN-LBS)

N/A 85

Approx. Weight (LBS/100)

N/A 0.170

Packaging

N/A Spindle

Thread Type

N/A Unified

Configuration 1

N/A 6 Point

Configuration 2

N/A Self-Sealing

Simplified Material

N/A Aluminum

Strength

N/A 80KSI - 550Mpa

Temperature

N/A 250°F - 120°C

Thread

N/A 0.2500-28 UNJF-3B