3020-01-051-9550 GEAR,SPUR Index 5365-01-051-9553 BUSHING,TAPERED

National Stock Number:
3120-01-051-9552

Federal Supply Class:
3120

National Item Identification Number:
010519552

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:
1200786719204ARMY, UNITED STATES DEPARTMENT OF THE
1200786732828KAYDON CORPORATION
47-B1C-21021335TIMKEN CO
KA047CPO32828KAYDON CORPORATION
47-B1C-21060380TIMKEN AEROSPACE, INC DBA TORRINGTON PRODUCT


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CORNER SHAPESQUARE ALL CORNERS
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
DIAMETER4.7500 INCHES NOMINAL
OUTSIDE DIAMETER5.2500 INCHES NOMINAL
OVERALL THICKNESS0.2500 INCHES NOMINAL
MATERIALCOPPER ALLOY OR STEEL OVERALL
STYLE DESIGNATORROUND


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