Model: 55LH7644-108

Hexagon Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Lubrication
Soluble lubricant
Nut Style
Hexagon
Nut Height
Between 0.391 inches and 0.406 inches
Width Across Flats
Between 0.928 inches and 0.940 inches
Tempurature Rating
Between -65.0 degrees fahrenheit and 450.0 degrees fahrenheit
Thread Series
Unjf
Thready Qty Per Inch (tpi)
18
Hardness Rating
Between 34.0 rockwell c and 41.0 rockwell c
Thread Size
0.625 inches
Bearing Surface Type
Chamfered or washer faced
Material
Steel comp 4130 nut or steel comp 4140 nut or steel comp 4340 nut or steel comp 8740 nut
Material Specification
Aisi assn standard all material responses nut
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 2, cl 2 federal specification single treatment response
NSN
5310-00-460-0731
Part Number
55LH7644-108
Description
Nut,self-locking,hexagon
CAGE
019L2

A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes nut (1), self-locking, cap.

Part 55LH7644-108 NSN 5310-00-460-0731

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05277
FIIG:
A021A0
Concept No.:
1
App. Key:
BK
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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