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National Stock Number:
3120-00-506-8472
Federal Supply Class:
3120
National Item Identification Number:
005068472
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:
| 7974504 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | | M3001783 | 61465 | GARWOOD/FELLER INC GARWOOD WINCH DIV |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 0.9940 INCHES MINIMUM AND 1.0020 INCHES MAXIMUM | | FEATURES PROVIDED | CASEHARDENED | | HARDNESS RATING | 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL | | LUBRICATION FEATURE | GROOVE FLAT BEARING SURFACE | | OUTSIDE DIAMETER | 1.6870 INCHES NOMINAL | | OVERALL THICKNESS | 0.1220 INCHES MINIMUM AND 0.1280 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | GREASE LUBRICATION | | MATERIAL | STEEL COMP 8620H OVERALL | | SPECIAL FEATURES | GROOVES 180 DEG APART | | STYLE DESIGNATOR | ROUND | | SURFACE FINISH | 125.0 MICROINCHES OVERALL |
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