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National Stock Number:
3120-00-528-3708
Federal Supply Class:
3120
National Item Identification Number:
005283708
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:
| 5283708 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | | A283708 | 00000 | ORDNANCE CORPS |
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Techincal Specification:
| MATERIAL | STEEL COMP 1009 OR | | STEEL COMP 1015 OR | | STEEL COMP 1020 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-640 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | STYLE DESIGNATOR | ROUND | | OUTSIDE DIAMETER | 2.2500 INCHES NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | OVERALL THICKNESS | 0.0930 INCHES MINIMUM AND | | 0.0940 INCHES MAXIMUM | | CENTER HOLE SHAPE STYLE | ROUND | | DIAMETER | 1.2700 INCHES MINIMUM AND | | 1.2750 INCHES MAXIMUM | | SURFACE FINISH | 16.0 MICROINCHES LEFT SIDE | | 16.0 MICROINCHES RIGHT SIDE |
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