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National Stock Number:
3120-00-884-4856
Federal Supply Class:
3120
National Item Identification Number:
008844856
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:
| 10910948 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | | 6772094 | 24617 | GENERAL MOTORS CORP | | 6772094 | 6H244 | THE W.W. WILLIAMS COMPANY, LLC | | 6772094 | 73342 | ALLISON TRANSMISSION INC |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 6.1800 INCHES MINIMUM AND 6.2400 INCHES MAXIMUM | | HARDNESS RATING | 90.0 ROCKWELL C MINIMUM AND 100.0 ROCKWELL C MAXIMUM OVERALL | | KEY LENGTH | 0.1700 INCHES MINIMUM AND 0.2000 INCHES MAXIMUM | | KEY QUANTITY | 8 | | KEY WIDTH | 0.7180 INCHES MINIMUM AND 0.7280 INCHES MAXIMUM | | OUTSIDE DIAMETER | 7.9000 INCHES MINIMUM AND 7.9500 INCHES MAXIMUM | | OVERALL THICKNESS | 0.3040 INCHES MINIMUM AND 0.3060 INCHES MAXIMUM | | MATERIAL | STEEL COMP 1045 OVERALL | | STYLE DESIGNATOR | ROUND W/SQUARE KEYS | | SURFACE FINISH | 20.0 MICROINCHES LEFT SIDE | | SURFACE FINISH | 20.0 MICROINCHES RIGHT SIDE |
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