Model: 639905-2

Key Washer

Properties:

Hole Diameter
Between 0.188 inches and 0.189 inches
Outside Diameter
0.438 inches
External Prebent Key Length
0.032 inches
External Prebent Key Width
0.020 inches
Distance From Centerline To Inside Of Prebent Key
0.240 inches
Overall Distance Including Keys
0.531 inches
Material Thickness
Between 0.037 inches and 0.039 inches
Hardness Rating
89.5 rockwell b
Heat Treatment
As fabricated
Material
Steel comp 1561
Material Specification
Qq-s-763 federal specification single material response
Style Designator
Key
NSN
5310-00-377-5862
Part Number
639905-2
Description
Washer,key
CAGE
37695

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 639905-2 NSN 5310-00-377-5862

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:
Z
ACC:
Equipment for Aircraft

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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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