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National Stock Number:
3120-00-352-7723
Federal Supply Class:
3120
National Item Identification Number:
003527723
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:
| 4F3286 | 11083 | CATERPILLAR INC |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | ROUND FIRST OUTSIDE CORNER | | CORNER SHAPE | SQUARE FIRST INSIDE CORNER | | CORNER SHAPE | SQUARE SECOND INSIDE CORNER | | CORNER SHAPE | SQUARE SECOND OUTSIDE CORNER | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 3.2030 INCHES MINIMUM AND 3.2180 INCHES MAXIMUM | | OUTSIDE DIAMETER | 3.9280 INCHES MINIMUM AND 3.9340 INCHES MAXIMUM | | OVERALL THICKNESS | 0.1613 INCHES MINIMUM AND 0.1643 INCHES MAXIMUM | | MATERIAL | STEEL OVERALL | | STYLE DESIGNATOR | ROUND | | SURFACE CONDITION | GROUND |
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