3120-01-350-6919 BEARING,WASHER,THRUST Index 5306-01-350-6921 ROD,THREADED END

National Stock Number:
3120-01-350-6920

Federal Supply Class:
3120

National Item Identification Number:
013506920

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:
21105484853711NAVAL SEA SYSTEMS COMMAND
556-6408589-3453711NAVAL SEA SYSTEMS COMMAND
DF330661 FIND 3443689HUNTINGTON INGALLS INC


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CORNER SHAPESQUARE ALL CORNERS
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
DIAMETER0.6350 INCHES MINIMUM AND 0.6450 INCHES MAXIMUM
OUTSIDE DIAMETER0.8570 INCHES MINIMUM AND 0.8620 INCHES MAXIMUM
OVERALL THICKNESS0.0610 INCHES MINIMUM AND 0.0630 INCHES MAXIMUM
MATERIALPLASTIC ACETAL OVERALL
STYLE DESIGNATORROUND
SURFACE FINISH63.0 MICROINCHES LEFT SIDE63.0 MICROINCHES RIGHT SIDE


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