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Thrust Washer Bearing NSN 3120-00-303-4977

Item Description

An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. It is designed for applications involving moving (kinetic) loads. Except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. The thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). Excludes straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. See also washer, flat and spacer, sleeve.

NSN 3120-00-303-4977 NSN: 3120-00-303-4977

Features and Characteristics

Cross Sectional Shape
Rectangular
Outside Diameter
4.3750 inches
Center Hole Shape
Round
Diameter
Between 2.9500 inches and 2.9550 inches
Overall Thickness
Between 0.1210 inches and 0.1250 inches
Bearing Surface Hole Quantity
4 first
Bearing Surface Hole Diameter
0.3120 inches first
Corner Shape
Square all corners
Features Provided
Casehardened
Hardness Rating
57.0 rockwell c
Surface Finish
100.0 microinches left side
Lubrication Feature
Groove flat bearing surface
Material
Steel comp 1010 or steel comp 1011 or steel comp 1012 or steel comp 1013 or steel comp 1015 or steel comp 1016 or steel comp 1017 or steel comp 1018 or steel comp 1019 or steel comp 1020
Style Designator
Round
FSC
3120 Unmounted Plain Bearings
NIIN
003034977
NSN
3120003034977

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
11A1229
Cage Code:
95201
Status:
A
MSDS:
Part Number:
1229H1022
Cage Code:
99539
Status:
A
MSDS:
Part Number:
2201D5
Cage Code:
56442
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8482105008
  • NAICS: 332991
  • SITC: 74610
  • Description: Thrust ball bearings
  • End Use (Code 21180):
    Industrial machines, other

Q & A

Frequently asked questions for NSN 3120-00-303-4977
What are the manufacturers of nsn 3120003034977?
Does this nsn 3120003034977 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 3120003034977
An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. it is designed for applications involving moving (kinetic) loads. except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. the thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). excludes straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. see also washer, flat and spacer, sleeve.
Does nsn 3120003034977 contain any precious metals?
No precious metal content.
Does nsn 3120003034977 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 3120003034977?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
13211
FIIG:
A045A0
App. Key:
L
Cond. Code:
1
Status:
A

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  •   Certificate of Conformance
  •   Quality Inspected Parts
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