NSN 3120-00-303-4977
Part Details | THRUST WASHER BEARING
3120-00-303-4977 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.
Alternate Parts: 1229H1022, 2201D5, 1229H1022, 1229H1022, 1229H1022, 11A1229, 3120-00-303-4977, 00-303-4977, 3120003034977, 003034977
Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
---|---|---|---|
31 | JAN 01, 1963 | 00-303-4977 | 13211 ( BEARING, WASHER, THRUST ) |
REFERENCE DRAWINGS & PICTURES
RECTANGULAR

ROUND

ROUND

Cross Reference | NSN 3120-00-303-4977
Part Number | Cage Code | Manufacturer |
---|---|---|
1229H1022 | 3D6E9 | AXLETECH INTERNATIONAL, LLC |
2201D5 | 56442 | DIAMOND REO TRUCK CO |
1229H1022 | 99539 | GENERAL FIRE EXTINGUISHER CORP |
1229H1022 | 02413 | KERSEY / AMERICAN LAFRANCEA DIV OF FIGGIE INTERNATIONAL INC |
1229H1022 | 78500 | MERITOR HEAVY VEHICLE SYSTEMS LLC |
11A1229 | 95201 | NAPCO INTERNATIONAL LLC |
Technical Data | NSN 3120-00-303-4977
Characteristic | Specifications |
---|---|
STYLE DESIGNATOR | ROUND |
OUTSIDE DIAMETER | 4.3750 INCHES NOMINAL |
CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
OVERALL THICKNESS | 0.1210 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM |
CENTER HOLE SHAPE STYLE | ROUND |
DIAMETER | 2.9500 INCHES MINIMUM AND 2.9550 INCHES MAXIMUM |
FEATURES PROVIDED | CASEHARDENED |