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National Stock Number:
3120-01-288-1228
Federal Supply Class:
3120
National Item Identification Number:
012881228
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:
| 5663 | 99557 | GUNNEBO JOHNSON CORPORATION |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 3.0040 INCHES MINIMUM AND 3.0080 INCHES MAXIMUM | | OUTSIDE DIAMETER | 3.7430 INCHES MINIMUM AND 3.7470 INCHES MAXIMUM | | OVERALL THICKNESS | 0.3700 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL | | MATERIAL | COPPER ALLOY 932 OR COPPER ALLOY 841 OVERALL | | STYLE DESIGNATOR | ROUND |
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