Model: 37B2990-03

Key Washer

Properties:

Hole Diameter
Between 0.684 inches and 0.689 inches
Outside Diameter
Between 0.9775 inches and 0.9975 inches
Internal Prebent Key Length
0.0625 inches
External Prebent Key Width
Between 0.105 inches and 0.125 inches
Internal Prebent Key Width
Between 0.105 inches and 0.125 inches
Overall Distance Including Keys
1.240 inches
External Key Quantity
6
Material Thickness
0.042 inches
Material
Steel
Material Specification
Mil-s-7809 military specification single material response
Surface Treatment
Cadmium or zinc
Style Designator
Key
NSN
5310-00-639-3820
Part Number
37B2990-03
Description
Washer,key
CAGE
80049

A washer of nonresilient material usually having two parallel bearing surfaces. The outside and/or inside edges have one or more protuberances. The ends and/or edges may be prebent at any angle or the protuberances may be prebent at any angle to the bearing surfaces. The keys or lugs may be fitted into keyways in adjacent material or they may be bent over after application to hold or lock one or more items in place. Excludes thrust type washer.

Part 37B2990-03 NSN 5310-00-639-3820

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
01869
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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
194160
UFC:
55210
LTL:
50.0
LCL:
50.0
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7318220000
  • SITC: 69422
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Washers other than lock washers, iron or steel

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