Model: L55LHEB220-144

Extended Washer Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Washer Outside Diameter
1.438 inches
Lubrication
Soluble lubricant
Overall Height
0.895 inches
Nut Style
Double hexagon
Width Across Flats
Between 1.050 inches and 1.067 inches
Tempurature Rating
Between -65.0 degrees fahrenheit and 450.0 degrees fahrenheit
Thread Series
Unjf
Thready Qty Per Inch (tpi)
14
Hardness Rating
Between 30.0 rockwell c and 46.0 rockwell c
Thread Size
0.875 inches
Material
Steel comp 3140 or steel comp 8740
Material Specification
Aisi assn standard 1st material response or sae assn standard 2nd material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 2, cl 2 federal specification single treatment response
NSN
5310-00-181-6519
Part Number
L55LHEB220-144
Description
Nut,self-locking,extended Washer
CAGE
72962

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 L55LHEB220-144 NSN 5310-00-181-6519

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:
CRITL:
X

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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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