5120-00-337-0933 DRIVE,WORM GEAR,BOILER TUBE Index 6685-00-337-0945 GAGE,PRESSURE,DIAL INDICATING

National Stock Number:
3120-00-337-0942

Federal Supply Class:
3120

National Item Identification Number:
003370942

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:
G7188PC7216712SIEMENS ENERGY, INC.
KC298AR16712SIEMENS ENERGY, INC.


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CORNER SHAPESQUARE ALL CORNERS
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
DIAMETER2.2500 INCHES NOMINAL
OUTSIDE DIAMETER4.9990 INCHES MINIMUM AND 5.0000 INCHES MAXIMUM
OVERALL THICKNESS0.1560 INCHES NOMINAL
MATERIALSTEEL COMP 1020 OVERALL
STYLE DESIGNATORROUND
SURFACE CONDITIONGROUND


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