Model: 4242A

Lock Washer

Properties:

Hole Diameter
Between 0.320 inches and 0.332 inches
Outside Diameter
Between 0.590 inches and 0.607 inches
Material Thickness
Between 0.040 inches and 0.050 inches
Material
Steel comp 1060 or steel comp 1065 or steel comp 1070 or steel comp 1075 or steel comp 1080
Material Specification
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Style Designator
Flat internal teeth
Nondefinitive Specification/std Data
A type
NSN
5310-00-018-0288
Part Number
4242A
Description
Washer,lock
CAGE
1ML14

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 4242A NSN 5310-00-018-0288

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: 7318210000
  • SITC: 69422
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Spring washers and other lock washers, iron or steel

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