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THREAD: AS8879
MATERIAL:
  • Nut - 3AL - 2.5V Titanium alloy per AMS6940 (UNS R56320).
  • Washer - 6AL-4V Titanium alloy per AMS4928 or AMS4967 (UNS R56400).
HEAT TREAT: Nut & Washer - per AMS - H - 81200
FINISH:
  • NUT - Coat Outside of Nut (Threads & C'Bore Optional) with dry film lubricant per AS5272, Type I, plus (Optional) cetyl alcohol luricant.
  • Washer - Dry film lubricant coat per AS5272, Type I, plus (Optional) cetyl alcohol lubricant.
PERFORMANCE:ENS1312, except as follows: A) Free running torque for EN1382ND5 & NDU5 to be 4 ozf-in maximum.
Unit of Measure

Specifications

A

0.465-0.475 in

B

0.268-0.274 in

C

0.359 in

D

0.323 in

E

0.335 in

H

0.100-0.110 in

L - MAX

0.340 in

M - MAX

0.323 in

X

0.097 in

Drive Tool Dash No.

-8

Axial Tensile Strength lbf Min

4300.000 lb

Thread per AS8879

0.2500-28 UNJF-3B

Nut Material

Titanium

Washer Material

Titanium

Nut Heat Treat

per AMS-H-81200

Washer Heat Treat

per AMS-H-81200

Nut Finish

Coat outside of nut (Threads & C´bore optional) with dry film lubricant per AS5272, Type 1, plus (optional) cetyl alcohol lubricant.

Washer Finish

Dry film lubricant coat per AS5272, Type 1, plus (optional) cetyl alcohol lubricant.

Performance

ENSI1312, Except as follows: A) Free running torque EN1382ND-5 & NDU5 to be 4 ozf-in maximum

Nominal Stud Nut Size

1/4-28

Notes

Notes

1. Misalignment: For use on sloped surfaces up to 7° maximum. When mated with apropriate EDDIE-BOLT® 2 PIN.
2. Dimensions to be met after finish, but before lubrication.
3. Color identification: EN1282ND(*): Nuts are identified with white paint within lobe area as shown. All three lobes shall be completely covered with paint on a minimum of 95% of the lobe area of each part. Overspray permitted on exterior surfaces. EN1382NDU(*): "No paint".
4. All EDDIE-NUTS™ must be installed using an appropriate DELTA-RAD™ EDDIE-BOLT® installation tool.
5. Nut assemblies shall be packaged in clear, sealed plastic bags. Each bag shall contain a maximum of 100 nuts per diameter. Each bag shall be marked with "EDDIE-NUTS™", Manufacturer´s complete part number, Manufacturer´s lot number, Manufacturer´s name and "PACK" date.
6. Nut and Washers to be aligned with low breakage adhesive in the assembled condition.