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THREAD: AS8879
MATERIAL:
  • Nut - 3AL - 2.5V Titanium alloy per AMS6940 (UNS R56320).
  • Washer - CP - 4 (Commercially pure) Titanium per AMS4940 (UNS R50550).
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, Expect as follows :
  • Free running torque for EN1282ND5 & NDU5 to be 4 ozf-in Maximum.
Unit of Measure

Specifications

A

0.542 in

A1

0.564-0.592 in

B

0.330-0.338 in

C

0.435 in

D

0.390 in

L - MAX

0.435 in

M - MAX

0.390 in

P

0.340 in

X

0.104 in

Drive Tool Dash No.

-10

Axial Tensile Strength lbf Min

6300.000 lb

Thread per AS8879

0.3125-24 UNJF-3B

Nut Material

Titanium

Washer Material

Titanium

Nut Heat Treat

AMS-H-81200

Washer Heat Treat

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

ENSI312, Except as Follows: A) Free running torque for ENI282ND5 & NDU5 to be 4 ozf-in maximum

Nominal Stud Nut Size

5/16-24

Notes

Notes

1. Dimensions to be met after finish, but before lubrication.
2. Color Identification: ENI282ND(*): 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 nut. Overspray permitted on exterior surfaces. ENI282NDU(*): "No paint".
3. All Eddie-Bolt® 2 nuts must be installed using an appropriate Eddie-Bolt® 2 fastener installation tool.