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Thrust Washer Bearing NSN 3120-00-839-0297

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 3120-00-839-0297 NSN: 3120-00-839-0297

Features and Characteristics

Cross Sectional Shape
Rectangular
Outside Diameter
5.1250 inches
Center Hole Shape
Round w/keyway
Diameter
Between 1.7500 inches and 1.7510 inches
Overall Thickness
0.8120 inches
Lubrication Material
Lubricant, manufacturers standard
Center Hole Keyway Depth
0.1875 inches
Center Hole Keyway Width
Between 0.3738 inches and 0.3800 inches
Center Hole Keyway Quantity
1
Bearing Surface Hole Quantity
2 first
Bearing Surface Hole Diameter
0.2500 inches first
Corner Shape
Square second outside corner
Hardness Rating
52.0 rockwell c
Special Features
First inside corner chamfer identical to second. Thd surface holes1/4-20 unc-3
Material
Steel
Material Specification
Qq-s-624 federal specification single material response
Surface Condition
Lapped
Style Designator
Round
FSC
3120 Unmounted Plain Bearings
NIIN
008390297
NSN
3120008390297

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
44B3021-439B
Cage Code:
10855
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 3120-00-839-0297
What are the manufacturers of nsn 3120008390297?
Does this nsn 3120008390297 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 3120008390297
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 3120008390297 contain any precious metals?
No precious metal content.
Does nsn 3120008390297 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 3120008390297?
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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