Model: FNF22-820

Extended Washer Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Washer Outside Diameter
0.828 inches
Overall Height
Between 0.580 inches and 0.600 inches
Nut Style
Double hexagon
Washer Thickness
Between 0.080 inches and 0.120 inches
Width Across Flats
Between 0.616 inches and 0.627 inches
Tempurature Rating
550.0 degrees fahrenheit
Thread Series
Unjf
Thready Qty Per Inch (tpi)
20
Thread Size
0.500 inches
Countersink Angle
90.0 degrees nut
Material
Steel comp 8740 nut or steel comp h11 nut
Surface Treatment
Cadmium nut
Surface Treatment Specification
Qq-p-416, type 1, cl 3 federal specification single treatment response nut
NSN
5310-00-948-1257
Part Number
FNF22-820
Description
Nut,self-locking,extended Washer
CAGE
56878

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 FNF22-820 NSN 5310-00-948-1257

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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