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Thrust Washer Bearing NSN 3120-01-009-2977

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 3120-01-009-2977 NSN: 3120-01-009-2977

Features and Characteristics

Counterbore Diameter
Between 7.5020 inches and 7.5080 inches
Counterbore Depth
0.1500 inches
Outside Diameter
0.8750 inches
Center Hole Shape
Round
Diameter
6.7300 inches
Overall Thickness
0.4750 inches
Bearing Surface Hole Quantity
6 first
Bearing Surface Hole Diameter
0.2500 inches first
Corner Shape
Square third inside corner
Surface Finish
63.0 microinches counterbore diameter
Special Features
Enamel, mil-e-15090, type 3, cl 1 external surface; w/6 insert screw thd ms124694
Material
Aluminum alloy 6061
Material Specification
Qq-a-250/11, t651 federal specification single material response
Surface Treatment
Oxide film inside diameter surface of body
Surface Treatment Specification
Mil-c-5541 military specification single treatment response inside diameter surface of body
Style Designator
Round
FSC
3120 Unmounted Plain Bearings
NIIN
010092977
NSN
3120010092977

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
2541556
Cage Code:
10001
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 3120-01-009-2977
What are the manufacturers of nsn 3120010092977?
Does this nsn 3120010092977 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 3120010092977
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 3120010092977 contain any precious metals?
No precious metal content.
Does nsn 3120010092977 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 3120010092977?
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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