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National Stock Number:
3120-01-264-3673
Federal Supply Class:
3120
National Item Identification Number:
012643673
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:
| ASTM B438 | 81346 | AMERICAN SOCIETY FOR TESTING AND MATERIALS | | MS21783 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | | MS21783-09204 | 81346 | AMERICAN SOCIETY FOR TESTING AND MATERIALS | | MS21783-09204 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| MATERIAL | COPPER ALLOY 841 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-B-5687 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | HARDNESS RATING | 30.0 ROCKWELL H MINIMUM AND | | 70.0 ROCKWELL H MAXIMUM OVERALL | | STYLE DESIGNATOR | ROUND | | OUTSIDE DIAMETER | 1.2350 INCHES MINIMUM AND | | 1.2650 INCHES MAXIMUM | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | OVERALL THICKNESS | 0.1200 INCHES MINIMUM AND | | 0.1300 INCHES MAXIMUM | | CENTER HOLE SHAPE STYLE | ROUND | | DIAMETER | 0.5600 INCHES MINIMUM AND | | 0.5700 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES LEFT SIDE | | 32.0 MICROINCHES RIGHT SIDE | | LUBRICATION MATERIAL | LUBRICATING OIL, MIL-L-6085 |
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