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National Stock Number:
3120-01-044-3122
Federal Supply Class:
3120
National Item Identification Number:
010443122
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:
| 6764637 | 73342 | ALLISON TRANSMISSION INC | | 7539859 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| MATERIAL | COPPER ALLOY 546-CANCELED OR | | COPPER ALLOY 510 OVERALL | | HARDNESS RATING | 60.0 ROCKWELL B MINIMUM OVERALL | | STYLE DESIGNATOR | ROUND | | OUTSIDE DIAMETER | 1.7400 INCHES MINIMUM AND | | 1.7600 INCHES MAXIMUM | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | OVERALL THICKNESS | 0.0610 INCHES MINIMUM AND | | 0.0630 INCHES MAXIMUM | | CENTER HOLE SHAPE STYLE | ROUND | | DIAMETER | 1.0005 INCHES MINIMUM AND | | 1.0105 INCHES MAXIMUM | | SURFACE FINISH | 50.0 MICROINCHES LEFT SIDE | | 50.0 MICROINCHES RIGHT SIDE | | LUBRICATION FEATURE | GROOVE FLAT BEARING SURFACE | | GROOVE INSIDE DIAMETER SURFACE OF BODY | | SPECIAL FEATURES | TWO GROOVES LOCATED ON EACH FLAT BEARING SURFACE |
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