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National Stock Number:
3120-00-541-7025
Federal Supply Class:
3120
National Item Identification Number:
005417025
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:
| 89487 | 62983 | EATON AEROSPACE, LLC |
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Techincal Specification:
| BEARING SURFACE HOLE DIAMETER | 0.2031 INCHES NOMINAL FIRST | | BEARING SURFACE HOLE QUANTITY | 4 FIRST | | CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | CHAMFERED ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 4.7187 INCHES NOMINAL | | HARDNESS RATING | 80.0 ROCKWELL A MINIMUM AND 82.5 ROCKWELL A MAXIMUM OVERALL | | OUTSIDE DIAMETER | 5.9000 INCHES MINIMUM AND 5.9002 INCHES MAXIMUM | | OVERALL THICKNESS | 0.3110 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-T-20154,TY A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | STYLE DESIGNATOR | ROUND | | SURFACE CONDITION | LAPPED |
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