3120-00-303-4977 Thrust Washer Bearing

Comprehensive specifications and application details for NSN: 3120-00-303-4977.

Summary

Explore detailed summary information for bearing: 3120-00-303-4977. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Federal Supply Classification: 3120 Unmounted Plain Bearings
(NSN) National Stock Number: 3120-00-303-4977
Item Name Code: 13211
Federal Item Identification Guide: A045A0
Assigment Date: 01/01/1963

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.

0.3120 inches nominal first bearing surface hole diameter, square all corners corner shape, rectangular cross-sectional shape style, 4 first bearing surface hole quantity, round center hole shape style

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-00-303-4977 . Find dimensions, materials, tolerances, performance characteristics, etc.

Bearing Surface Hole Diameter: 0.3120 inches nominal first
Bearing Surface Hole Quantity: 4 first
Center Hole Shape Style: round
Corner Shape: square all corners
Cross-Sectional Shape Style: rectangular
Diameter: 2.9500 inches minimum and 2.9550 inches maximum
Features Provided: casehardened
Hardness Rating: 57.0 rockwell c nominal overall
Lubrication Feature: groove flat bearing surface
Outside Diameter: 4.3750 inches nominal
Overall Thickness: 0.1210 inches minimum and 0.1250 inches maximum
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 overall
Style Designator: round
Surface Finish: 100.0 microinches right side
Surface Finish: 100.0 microinches left side

Related Bearings

Explore the various bearing models associated with this NSN. Click on any bearing below to view detailed technical data, performance ratings, and application guidelines.

Part Number	Name
11A1229	Thrust Washer Bearing
1229H1022	Thrust Washer Bearing
2201D5	Thrust Washer Bearing

Frequently Asked Questions

Find quick answers to common questions about bearing: 3120-00-303-4977. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-00-303-4977?: The FSCG of the NSN 3120-00-303-4977 is 3120

Does the NSN 3120-00-303-4977 have a Schedule B code assigned?: Yes, the Schedule B code is 8482105008

Does NSN 3120-00-303-4977 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 3120-00-303-4977 contain precious materials?: Item does not contain precious metal.

Does NSN 3120-00-303-4977 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.