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National Stock Number:
3120-00-520-6857
Federal Supply Class:
3120
National Item Identification Number:
005206857
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.
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Manufacturer Information:
| 3120005206857 | A00AM | E.C.A ETABLISSEMENT CENTRAL DESAPPROVISIONNEMENTS DES FORCES ARMEE | | 3120005206857 | SCY13 | E.C.A ETABLISSEMENT CENTRALD'APPROVISIONNEMENT DES FORCES ARMEE | | 5206857 | 19206 | ARMY, UNITED STATES DEPARTMENT OF THE BUSINESS DEVELOPMENT DBA WATERVLIET ARSENAL |
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Techincal Specification:
| MATERIAL | STEEL OUTSIDE DIAMETER SURFACE OF RACE INSERT | | MATERIAL DOCUMENT AND CLASSIFICATION | FED-STD-66 FED STD SINGLE MATERIAL RESPONSE OVERALL | | HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND | | 46.0 ROCKWELL C MAXIMUM OVERALL | | SURFACE TREATMENT | PHOSPHATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-16232,TYPE 2 MIL STD SINGLE TREATMENT RESPONSE OVERALL | | STYLE DESIGNATOR | ROUND | | OUTSIDE DIAMETER | 3.4500 INCHES MINIMUM AND | | 3.5500 INCHES MAXIMUM | | CORNER SHAPE | CHAMFERED ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | OVERALL THICKNESS | 0.2000 INCHES MINIMUM AND | | 0.2020 INCHES MAXIMUM | | CENTER HOLE SHAPE STYLE | ROUND | | DIAMETER | 1.4850 INCHES MINIMUM AND | | 1.5150 INCHES MAXIMUM | | SURFACE FINISH | 125.0 MICROINCHES LARGEST OUTSIDE DIAMETER | | 32.0 MICROINCHES LEFT SIDE | | 32.0 MICROINCHES RIGHT SIDE | | SPECIAL FEATURES | BEARING SURFACE HAS SECOND HOLE APPROX. 0.2812 IN.DIA. | | CRITICALITY CODE JUSTIFICATION | ADUM |
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