NSN 3120-01-228-4254

Part Details | THRUST WASHER BEARING

3120-01-228-4254 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: NR202102, 3120-01-228-4254, 01-228-4254, 3120012284254, 012284254

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
31MAR 18, 198601-228-425413211 ( BEARING, WASHER, THRUST )
REFERENCE DRAWINGS & PICTURES

RECTANGULAR

ROUND

ROUND

Cross Reference | NSN 3120-01-228-4254
Part Number Cage Code Manufacturer
NR20210278567SPECO CORP
Technical Data | NSN 3120-01-228-4254
Characteristic Specifications
STYLE DESIGNATOR ROUND
OUTSIDE DIAMETER7.2500 INCHES MINIMUM AND 7.2515 INCHES MAXIMUM
CROSS-SECTIONAL SHAPE STYLE RECTANGULAR
OVERALL THICKNESS0.2450 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM
CENTER HOLE SHAPE STYLE ROUND
DIAMETER6.6800 INCHES NOMINAL