8075179PC8069148

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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-662-1943

Item Name Code

13211

Assigment Date

01/01/1963 (63 years ago)

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.

rectangular cross-sectional shape style, 0.3140 inches minimum and 0.3160 inches maximum overall thickness, round w/round keyways center hole shape style, 6.0000 inches minimum and 6.0100 inches maximum outside diameter, 4.5040 inches nominal major diameter

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Cross-Sectional Shape Style: rectangular
Major Diameter: 4.5040 inches nominal
Outside Diameter: 6.0000 inches minimum and 6.0100 inches maximum
Center Hole Shape Style: round w/round keyways
Overall Thickness: 0.3140 inches minimum and 0.3160 inches maximum
Minor Diameter: 4.0040 inches minimum and 4.0050 inches maximum
Center Hole Keyway Radius: 0.2500 inches nominal
Center Hole Keyway Quantity: 4
Corner Shape: square all corners
Hardness Rating: 50.0 brinell standard minimum and 60.0 brinell standard maximum overall
Lubrication Feature: groove flat bearing surface
Lubrication Feature: groove flat unfinished surface
Special Features: four grooves on each side
Material: copper alloy overall
Style Designator: round

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
8069148	Thrust Washer Bearing
8075178PC8069148	Thrust Washer Bearing
8075179PC8069148	Thrust Washer Bearing
8075182PC8069148	Thrust Washer Bearing
81129S41-575178PC8069148	Thrust Washer Bearing
81129S41-575179PC8069148	Thrust Washer Bearing
81129S41-575182PC8069148	Thrust Washer Bearing

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 3120-00-662-1943?

The FSCG of the NSN 3120-00-662-1943 is 3120

Does the NSN 3120-00-662-1943 have a Schedule B code assigned?

Yes, the Schedule B code is 8482105008

Does NSN 3120-00-662-1943 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 3120-00-662-1943 contain precious materials?

Precious metal content is unknown

Does NSN 3120-00-662-1943 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 3120-00-662-1943 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963