Model: 538179

Key Washer

Properties:

Hole Diameter
Between 2.750 inches and 2.755 inches
Outside Diameter
3.150 inches
Internal Straight Key Width
0.230 inches
Distance From Centerline To Top Of Internal Key
1.265 inches
Internal Key Quantity
1
Material Thickness
Between 0.429 inches and 0.437 inches
Surface Finish
25.0 microinches bottom
Surface Finish
25.0 microinches top
Surface Finish
63.0 microinches outer
Heat Treatment
T-6 solution heat treated, artifically aged
Material
Aluminum alloy or aluminum alloy 5083
Material
Aluminum alloy or aluminum alloy 5083
Material Specification
Qq-a-222 federal specification 1st material response or qq-a-277 federal specification 2nd material response or qq-a-268 federal specification 3rd material response or ww-t-789 federal specification 4th material response
Surface Treatment
Anodize
Style Designator
Key
NSN
5310-00-515-8498
Part Number
538179
Description
Washer,key
CAGE
17576

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 538179 NSN 5310-00-515-8498

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:
573
TCC:
Z
SHC:
Z
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 7616108000
  • SITC: 69440
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Cotters, cotter-pins, washers and similar articles, of aluminum

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