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National Stock Number:
3120-00-081-7615
Federal Supply Class:
3120
National Item Identification Number:
000817615
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:
| 9171034 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| STYLE DESIGNATOR | ROUND | | OUTSIDE DIAMETER | 8.1300 INCHES MINIMUM AND | | 8.1600 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | SHOULDERED | | FLANGE THICKNESS | 0.1470 INCHES MINIMUM AND | | 0.1530 INCHES MAXIMUM | | OVERALL THICKNESS | 0.8700 INCHES MINIMUM AND | | 0.9000 INCHES MAXIMUM | | SHANK OUTSIDE DIAMETER | 7.7520 INCHES MINIMUM AND | | 7.7550 INCHES MAXIMUM | | CENTER HOLE SHAPE STYLE | ROUND | | DIAMETER | 7.4000 INCHES MINIMUM AND | | 7.4200 INCHES MAXIMUM | | LUBRICATION MATERIAL | LUBRICATING OIL |
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