Model: 4197902-20

Lock Washer

Properties:

Hole Diameter
Between 0.384 inches and 0.390 inches
Outside Diameter
Between 0.670 inches and 0.692 inches
Material Thickness
Between 0.032 inches and 0.040 inches
Material
Steel comp 1050 or steel comp 1551 or steel comp 1552 or steel comp 1053 or steel comp 1054 or steel comp 1055 or steel comp 1059 or steel comp 1060 or steel comp 1561 or steel comp 1062 or steel comp 1064
Material Specification
66 federal standard all material responses or aisi national specification all material responses or sae national specification all material responses
Surface Treatment
Cadmium
Style Designator
Flat internal teeth
NSN
5310-00-167-0722
Part Number
4197902-20
Description
Washer,lock
CAGE
05869

A washer which is usually round with a centrally located hole. Its edges and two bearing surfaces are so designed that applied pressure brings into play the spring tension and/or frictional locking principle which materially resists any tendency toward turning. It may be made of one or two pieces

Part 4197902-20 NSN 5310-00-167-0722

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
14218
FIIG:
A022B0
Concept No.:
1
App. Key:
A
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: 7318210000
  • SITC: 69422
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Spring washers and other lock washers, iron or steel

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