Model: SS4029-3

Lock Washer

Special Features:

Serrated teeth locking feature, 0.027 min, 0.033 depth, 60 degrees angle teeth located on one bearing surface

Properties:

Hole Diameter
Between 0.312 inches and 0.313 inches
Outside Diameter
Between 0.734 inches and 0.766 inches
Surface Finish
100.0 microinches all surfaces
Heat Treatment
T-4 solution heat treated, natural aged
Material
Aluminum alloy 2024
Material Specification
Qq-a-225/6 temper t4 federal specification single material response
Surface Treatment
Zinc and chromate
Surface Treatment Specification
Mil-p-8585 military specification single treatment response
Nondefinitive Specification/std Data
4029-78286 subclass
NSN
5310-00-034-5298
Part Number
SS4029-3
Description
Washer,lock
CAGE
78286

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 SS4029-3 NSN 5310-00-034-5298

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

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: 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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