Model: 645213B28

Hexagon Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Nut Style
Hexagon
Nut Height
0.243 inches
Width Across Flats
Between 0.367 inches and 0.376 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
32
Thread Size
0.190 inches
Bearing Surface Type
Chamfered
Bearing Surface Finish
125.0 microinches
Material
Steel
Surface Treatment
Oxide
NSN
5310-00-874-2806
Part Number
645213B28
Description
Nut,self-locking,hexagon
CAGE
99551

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 645213B28 NSN 5310-00-874-2806

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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