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National Stock Number:
3120-00-799-4940
Federal Supply Class:
3120
National Item Identification Number:
007994940
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:
| 3120007994940 | SCY13 | E.C.A ETABLISSEMENT CENTRALD'APPROVISIONNEMENT DES FORCES ARMEE | | 6765576 | 24617 | GENERAL MOTORS CORP | | 7994940 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | | 6765576 | 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 | 1.1260 INCHES MINIMUM AND 1.1360 INCHES MAXIMUM | | FEATURES PROVIDED | CASEHARDENED | | HARDNESS RATING | 60.0 ROCKWELL C NOMINAL OVERALL | | OUTSIDE DIAMETER | 2.1200 INCHES NOMINAL | | OVERALL THICKNESS | 0.0590 INCHES MINIMUM AND 0.0620 INCHES MAXIMUM | | MATERIAL | STEEL COMP 1008 OVERALL | | PRECIOUS MATERIAL | SILVER | | STYLE DESIGNATOR | ROUND | | SURFACE FINISH | 25.0 MICROINCHES RIGHT SIDE | | SURFACE FINISH | 25.0 MICROINCHES LEFT SIDE | | SURFACE TREATMENT | SILVER OVERALL |
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