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National Stock Number:
3120-01-055-4403
Federal Supply Class:
3120
National Item Identification Number:
010554403
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:
| 12265878 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | | 12265878 | 5RQL2 | DRS ENVIRONMENTAL SYSTEMS INC | | 1226666159-3 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | | 666159-3 | 20418 | DRS SUSTAINMENT SYSTEMS, INC. USE CAGE CODE 98255 FOR CATALOGING | | 12265878 | 98255 | DRS SUSTAINMENT SYSTEMS INC |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | SHOULDERED | | DIAMETER | 0.3765 INCHES MINIMUM AND 0.3815 INCHES MAXIMUM | | FLANGE THICKNESS | 0.0600 INCHES NOMINAL | | OUTSIDE DIAMETER | 0.7400 INCHES MINIMUM AND 0.7600 INCHES MAXIMUM | | OVERALL THICKNESS | 0.0900 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-B-5687, TY 1, COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | COPPER ALLOY 841 OVERALL | | SHANK OUTSIDE DIAMETER | 0.4800 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM | | STYLE DESIGNATOR | ROUND |
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