3120-01-009-2976 BUSHING,SLEEVE Index 4820-01-009-2978 VALVE,ANGLE

National Stock Number:
3120-01-009-2977

Federal Supply Class:
3120

National Item Identification Number:
010092977

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:
254155610001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER


Techincal Specification:
BEARING SURFACE HOLE DIAMETER0.2500 INCHES NOMINAL FIRST
BEARING SURFACE HOLE QUANTITY6 FIRST
CENTER HOLE SHAPE STYLEROUND
CORNER SHAPEROUND FIRST OUTSIDE CORNER
CORNER SHAPEROUND SECOND OUTSIDE CORNER
CORNER SHAPESQUARE FIRST INSIDE CORNER
CORNER SHAPEROUND SECOND INSIDE CORNER
CORNER SHAPESQUARE FOURTH INSIDE CORNER
CORNER SHAPESQUARE THIRD INSIDE CORNER
COUNTERBORE DEPTH0.1500 INCHES NOMINAL
COUNTERBORE DIAMETER7.5020 INCHES MINIMUM AND 7.5080 INCHES MAXIMUM
DIAMETER6.7300 INCHES NOMINAL
OUTSIDE DIAMETER0.8750 INCHES NOMINAL
OVERALL THICKNESS0.4750 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/11,T651 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY 6061 OVERALL
SPECIAL FEATURESENAMEL,MIL-E-15090,TY 3,CL 1 EXTERNAL SURFACE; W/6 INSERT SCREW THD MS124694
STYLE DESIGNATORROUND
SURFACE FINISH125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
SURFACE FINISH125.0 MICROINCHES LARGEST OUTSIDE DIAMETER
SURFACE FINISH125.0 MICROINCHES RIGHT SIDE
SURFACE FINISH125.0 MICROINCHES LEFT SIDE
SURFACE FINISH63.0 MICROINCHES COUNTERBORE DIAMETER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE DIAMETER SURFACE OF BODY
SURFACE TREATMENTOXIDE FILM INSIDE DIAMETER SURFACE OF BODY


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