Model: SW120-287

Lock Washer

Properties:

Hole Diameter
Between 0.472 inches and 0.480 inches
Outside Diameter
Between 0.593 inches and 0.607 inches
Material Thickness
Between 0.016 inches and 0.020 inches
Hardness Rating
Between 40.0 rockwell c and 50.0 rockwell c
Color
Black
Material
Steel comp 1050 or steel comp 1064
Material Specification
66 federal standard all material responses
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, class 3 federal specification all treatment responses
Style Designator
Flat internal teeth
Supplementary Features
For mtg elect. Comp appl 76374 circuit breakers mp-1500-052/700-001/1536-010 series, black finish
Specification Data
88044-an936/canceled/ government standard
NSN
5310-00-197-4511
Part Number
SW120-287
Description
Washer,lock
CAGE
09786

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 SW120-287 NSN 5310-00-197-4511

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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