1240-00-764-8846 DIAPHRAGM Index 5310-00-764-8848 NUT,PLAIN,ROUND

National Stock Number:
3120-00-764-8847

Federal Supply Class:
3120

National Item Identification Number:
007648847

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:
764884719200US ARMY ARDEC RDECOM


Techincal Specification:
MATERIALALUMINUM ALLOY 2024 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONWW-T-785,24S,T3,TY 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTANODIZE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORROUND
OUTSIDE DIAMETER1.1830 INCHES MINIMUM AND
1.1850 INCHES MAXIMUM
CORNER SHAPESQUARE ALL CORNERS
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OVERALL THICKNESS0.2750 INCHES NOMINAL
CENTER HOLE SHAPE STYLEROUND
DIAMETER1.1000 INCHES MINIMUM AND
1.1100 INCHES MAXIMUM
SURFACE FINISH125.0 MICROINCHES OVERALL
LUBRICATION FEATUREGROOVE INTERNAL SURFACES
CRITICALITY CODE JUSTIFICATIONABKV
THE MANUFACTURERS DATA
MANUFACTURERS CODE19200
DESIGN CONTROL REFERENCE7648847


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