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National Stock Number:
3120-01-280-6936
Federal Supply Class:
3120
National Item Identification Number:
012806936
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:
| C135798-1 | 03538 | LOCKHEED MARTIN CORPORATION | | C135798-1 | 13030 | LOCKHEED MARTIN SIPPICAN, INC. |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | CHAMFERED FIRST INSIDE CORNER | | CORNER SHAPE | SQUARE FIRST OUTSIDE CORNER | | CORNER SHAPE | SQUARE SECOND INSIDE CORNER | | CORNER SHAPE | SQUARE SECOND OUTSIDE CORNER | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 5.0000 INCHES MINIMUM AND 5.0200 INCHES MAXIMUM | | OUTSIDE DIAMETER | 6.0000 INCHES NOMINAL | | OVERALL THICKNESS | 0.2500 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | COPPER ALLOY 932 OVERALL | | STYLE DESIGNATOR | ROUND | | SURFACE FINISH | 63.0 MICROINCHES OVERALL |
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