Model: 73130M820

Hexagon Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Lubrication
Dry film lubricant
Nut Height
0.328 inches
Drilled Hole Diameter
Between 0.037 inches and 0.057 inches
Hole Type And Quantity
2 drilled
Width Across Flats
Between 0.741 inches and 0.752 inches
Tempurature Rating
450.0 degrees fahrenheit
Thread Series
Unjf
Thready Qty Per Inch (tpi)
20
Hardness Rating
44.0 rockwell c
Thread Size
0.500 inches
Hole Configuration Style
Configuration b
Bearing Surface Type
Flat
Material
Steel comp 4130 or steel comp 4140 or steel comp 4340 or steel comp 8740
Material Specification
Aisi national specification all material responses
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 2, class 2 federal specification single treatment response
Supplementary Features
Shear thin height design
Specification Data
81349-mil-n-25027 government specification
NSN
5310-01-189-7491
Part Number
73130M820
Description
Nut,self-locking,hexagon
CAGE
56878

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 73130M820 NSN 5310-01-189-7491

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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