673921-450

View detailed technical data, stock status, and sourcing information for: 673921-450

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673921-450
Federal Supply Group
Bearings
Federal Supply Classification
3120 Unmounted Plain Bearings
National Stock Number
3120-00-492-3073
Item Name Code
13211
Assigment Date
06/27/1974 (52 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, 0.0449 inches minimum and 0.0451 inches maximum overall thickness, 0.1880 inches minimum and 0.1900 inches maximum diameter, 0.3750 inches nominal outside diameter, round center hole shape style

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
Outside Diameter
0.3750 inches nominal
Center Hole Shape Style
round
Diameter
0.1880 inches minimum and 0.1900 inches maximum
Overall Thickness
0.0449 inches minimum and 0.0451 inches maximum
Corner Shape
square all corners
Surface Finish
16.0 microinches left side
Surface Finish
63.0 microinches inside diameter surface of body
Surface Finish
63.0 microinches largest outside diameter
Surface Finish
63.0 microinches right side
Lubrication Feature
groove right side
Special Features
face is parellel with-in 0.0001 inch
Material
steel corrosion resisting overall
Surface Treatment
passivate overall
Surface Treatment Document And Classification
990104,fscm 06481 mfr ref single treatment response 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
673921-0450 Thrust Washer Bearing
673921-450 Thrust Washer Bearing

FAQs

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

What is the FSCG of the NSN 3120-00-492-3073?
The FSCG of the NSN 3120-00-492-3073 is 3120
Does the NSN 3120-00-492-3073 have a Schedule B code assigned?
Yes, the Schedule B code is 8482105008
Does NSN 3120-00-492-3073 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 3120-00-492-3073 contain precious materials?
Item does not contain precious metal.
Does NSN 3120-00-492-3073 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 3120-00-492-3073 was assigned to the Federal Catalog?
It was assigned 52 years ago, on Thu, Jun 27, 1974

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