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National Stock Number:
3120-00-918-9564
Federal Supply Class:
3120
National Item Identification Number:
009189564
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:
| 2181652 PIECE 9 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | 9855-529X3PC9 | 96169 | ELECTRIC BOAT CORPORATION |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 3.5156 INCHES MINIMUM AND 3.5468 INCHES MAXIMUM | | OVERALL THICKNESS | 0.1830 INCHES MINIMUM AND 0.1930 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-P-20693 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | LUBRICANT LUBRICATION | | MATERIAL | PLASTIC POLYHEXAMETHYLENE AMIDE OVERALL | | OUTSIDE DIAMETER | 4.2031 INCHES MINIMUM AND 4.2343 INCHES MAXIMUM | | STYLE DESIGNATOR | ROUND | | SURFACE FINISH | 125.0 MICROINCHES INNER MEMBER | | SURFACE FINISH | 125.0 MICROINCHES LARGEST OUTSIDE DIAMETER | | SURFACE FINISH | 63.0 MICROINCHES LEFT SIDE | | SURFACE FINISH | 63.0 MICROINCHES RIGHT SIDE |
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