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National Stock Number:
3120-00-288-4019
Federal Supply Class:
3120
National Item Identification Number:
002884019
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:
| 47-620-426-2 | 80070 | LOCKHEED MARTIN CORPORATION | | 47-620-426-2 | 97499 | BELL TEXTRON INC |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | TAPERED SIDE | | DIAMETER | 0.5920 INCHES MINIMUM AND 0.5950 INCHES MAXIMUM | | OUTSIDE DIAMETER | 0.9220 INCHES MINIMUM AND 0.9270 INCHES MAXIMUM | | OVERALL THICKNESS | 0.1439 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP E4340H OVERALL | | SPHERICAL DEPTH | 0.0600 INCHES NOMINAL | | STYLE DESIGNATOR | ROUND | | SURFACE FINISH | 13.0 MICROINCHES RIGHT SIDE | | SURFACE FINISH | 5.0 MICROINCHES LEFT SIDE |
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