3120-01-227-0638 BEARING,PLAIN,ROD END Index 4820-01-227-0640 VALVE,BALL

National Stock Number:
3120-01-227-0639

Federal Supply Class:
3120

National Item Identification Number:
012270639

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:
002-20136-0332770KATO ENGINEERING INC.


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
COUNTERBORE DIAMETER5.2500 INCHES NOMINAL
CORNER SHAPECHAMFERED FOURTH INSIDE CORNER
CORNER SHAPECHAMFERED THIRD INSIDE CORNER
CORNER SHAPESQUARE FIRST INSIDE CORNER
CORNER SHAPESQUARE FIRST OUTSIDE CORNER
CORNER SHAPESQUARE SECOND INSIDE CORNER
CORNER SHAPESQUARE SECOND OUTSIDE CORNER
COUNTERBORE DEPTH1.4750 INCHES NOMINAL
CROSS-SECTIONAL SHAPE STYLECOUNTERBORED
DIAMETER3.9190 INCHES MINIMUM AND 3.9230 INCHES MAXIMUM
LUBRICATION FEATUREGROOVE COUNTERBORE DIAMETER
MATERIAL DOCUMENT AND CLASSIFICATION900-10643,CAGEC 32770 MFR REF SINGLE MATERIAL RESPONSE OVERALL
OVERALL THICKNESS1.9375 INCHES NOMINAL
MATERIALSTEEL OVERALL
OUTSIDE DIAMETER6.0000 INCHES NOMINAL
STYLE DESIGNATORROUND
SURFACE FINISH16.0 MICROINCHES RIGHT SIDE
SURFACE FINISH63.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
SURFACE FINISH63.0 MICROINCHES LEFT SIDE
SURFACE FINISH63.0 MICROINCHES VERTICAL COUNTERBORE SURFACE


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