3120-01-079-1090 BEARING,WASHER,THRUST Index 4820-01-079-1092 VALVE,BALL

National Stock Number:
3120-01-079-1091

Federal Supply Class:
3120

National Item Identification Number:
010791091

Description:
BEARING,WASHER,THRUST

Detail:
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.


Manufacturer Information:
10888030-419204ARMY, UNITED STATES DEPARTMENT OF THE


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CORNER SHAPESQUARE ALL CORNERS
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
DIAMETER0.5260 INCHES MINIMUM AND 0.5360 INCHES MAXIMUM
OUTSIDE DIAMETER1.4800 INCHES MINIMUM AND 1.5100 INCHES MAXIMUM
OVERALL THICKNESS0.1200 INCHES MINIMUM AND 0.1300 INCHES MAXIMUM
STYLE DESIGNATORROUND


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