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THREAD: AS8879
MATERIAL: 17-4PH stainless steel per AMS 5643 (UNS S17400).
FINISH: Nut & Washer
  • KFN532C(*) - Cadmium plate per AMS-QQ-P-416, Type II, Class 3, and cetyl alcohol lubricant.
  • KFN532DL(*) - Passivate per AMS2700 and Kaylube molybdenum disulfide dry lubricant coat per AS5272, Type I.
  • KFN532E(*) - Silver plate per AMS 2410 and cetyl alcohol lubricant.
PERFORMANCE: NASM25027, except as follows:
  • Axial tensile strength as tabulated.
  • Recommended seating torque as tabulated.
  • Locking torque as tabulated.
  • Thread locking and breakaway values shall apply for five reusability cycles on a titanium pin lubricated with cetyl alcohol.
APPLICATION: For use on standard to .032 oversize shank bolts.
MISALIGNMENT: Up to 7° maximum from centered position.
NOTES:
  1. Coat KFN532DL(*) parts with yellow dykem color. Coat 20% of nut minimum. Coating shall not affect self-locking torque.
  2. Parts are normally supplied in assembled (bonded) condition. To order individually, add "N" for nut only or add "B" for washer only.
Unit of Measure

Specifications

A - MIN

N/A 1.000

C - MIN

N/A 0.843

D

N/A 0.663-0.599

H - MAX

N/A 0.680

L

N/A 1.305-1.295

M

N/A 0.182-0.162

P - REF

N/A 0.815

R - REF

N/A 0.750

V

N/A 0.315-0.305

W

N/A 0.752-0.741

X - REF

N/A 0.765

Y

N/A 0.008

Axial Tensile Strength (LBS. MIN)

N/A 49000

Finish

N/A Silver Plate per AMS 2410 and Cetyl Alcohol Lubricant

Thread Type

N/A Unified

Configuration 1

N/A 6 Point

Configuration 2

N/A Self-Aligning

Simplified Material

N/A CRES

Strength

N/A 180KSI - 1250Mpa

Temperature

N/A 450°F - 235°C

Thread

N/A 0.6250-18 UNJF-3B