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National Stock Number:
3120-00-720-2402
Federal Supply Class:
3120
National Item Identification Number:
007202402
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:
| 55B22211 | 80049 | DEPARTMENT OF THE AIR FORCE | | 55B22211 | 97151 | AIR FORCE LIFECYCLE MANAGEMENT CENTER ELECTRONIC COMPONENTS (AFLCMC/EZSS) | | 55B22211 | 98750 | SAN ANTONIO AIR LOGISTICS CENTER |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 8.3690 INCHES MINIMUM AND 8.3710 INCHES MAXIMUM | | OUTSIDE DIAMETER | 8.9530 INCHES MINIMUM AND 8.9570 INCHES MAXIMUM | | OVERALL THICKNESS | 1.1770 INCHES MINIMUM AND 1.1880 INCHES MAXIMUM | | STYLE DESIGNATOR | ROUND |
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