Model: EB-820

Extended Washer Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque with nonmetallic insert
Washer Outside Diameter
Between 0.865 inches and 0.875 inches
Overall Height
0.563 inches
Nut Style
Double hexagon
Washer Thickness
0.118 inches
Width Across Flats
Between 0.612 inches and 0.628 inches
Tempurature Rating
250.0 degrees fahrenheit
Thread Series
Unjf
Thready Qty Per Inch (tpi)
20
Thread Size
0.500 inches
Material
Plastic polyamide locking insert
Material
Steel comp 4130 nut or steel comp 4340 nut or steel comp 3140 nut or steel comp 8740 nut
Material Specification
Aisi assn standard all material responses nut
Surface Treatment
Cadmium except insert
Surface Treatment Specification
Qq-p-416, type 1, cl 3 federal specification single treatment response except insert
NSN
5310-00-297-3721
Part Number
EB-820
Description
Nut,self-locking,extended Washer
CAGE
15653

A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery. An integral feature is incorporated for locking on the threads of a mating member.

Part EB-820 NSN 5310-00-297-3721

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
29729
FIIG:
A021A0
Concept No.:
1
App. Key:
BS
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
573
TCC:
Z
SHC:
9
ACC:
Construction Materials

End Items End applications NSN 5310-00-297-3721 is a component of

  • Hc-130) Ec-130e Mc-130h Sof ( Ac-130h Aircraft
  • Sof / Hh-53j/m Pave Low Helicopter
  • Los Angeles Class Ssn (688)
  • Forrestal Class Cv
  • Nimitz Class Cvn
  • Seawolf Class Ssn
  • Consolidated Targets
  • Submarine Engineering And Diesel Systems
  • Nuclear Reactor Boundry Area

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Schedule B and Export
  • Schedule B: 7318160000
  • SITC: 69421
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Nuts of iron or steel

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