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National Stock Number:
3120-01-244-7622
Federal Supply Class:
3120
National Item Identification Number:
012447622
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:
| 55237-1 | 81982 | HYDRO-AIRE AEROSPACE CORP |
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Techincal Specification:
| MATERIAL | STEEL COMP 440C OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | HARDNESS RATING | 55.0 ROCKWELL C MINIMUM AND | | 60.0 ROCKWELL C MAXIMUM OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | STYLE DESIGNATOR | ROUND | | OUTSIDE DIAMETER | 0.7550 INCHES MINIMUM AND | | 0.7650 INCHES MAXIMUM | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | OVERALL THICKNESS | 0.1595 INCHES MINIMUM AND | | 0.1605 INCHES MAXIMUM | | CENTER HOLE SHAPE STYLE | ROUND W/KEYWAY | | DIAMETER | 0.3190 INCHES MINIMUM AND | | 0.3230 INCHES MAXIMUM | | CENTER HOLE KEYWAY DEPTH | 0.0900 INCHES NOMINAL | | CENTER HOLE KEYWAY WIDTH | 0.0820 INCHES MINIMUM AND | | 0.0870 INCHES MAXIMUM | | CENTER HOLE KEYWAY QUANTITY | 2 | | SURFACE CONDITION | GROUND |
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