Model: SM-B-447730

Lock Washer

Properties:

Hole Diameter
0.200 inches
Outside Diameter
0.305 inches
Material Thickness
0.018 inches
Material
Copper alloy
Surface Treatment
Nickel
Surface Treatment Specification
Qq-n-290 gr e federal specification single treatment response
Style Designator
Flat internal teeth
NSN
5310-01-100-5475
Part Number
SM-B-447730
Description
Washer,lock
CAGE
80063

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 SM-B-447730 NSN 5310-01-100-5475

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: 7415210000
  • SITC: 69432
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Copper washers including spring washers not threaded

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