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National Stock Number:
3120-00-480-7926
Federal Supply Class:
3120
National Item Identification Number:
004807926
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:
| 2814310 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 0.3150 INCHES MINIMUM AND 0.3250 INCHES MAXIMUM | | HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL | | LUBRICATION FEATURE | GROOVE FLAT BEARING SURFACE | | OUTSIDE DIAMETER | 0.7460 INCHES MINIMUM AND 0.7480 INCHES MAXIMUM | | OVERALL THICKNESS | 0.0990 INCHES MINIMUM AND 0.1000 INCHES MAXIMUM | | MATERIAL | STEEL COMP 1030 AND STEEL COMP 1035 AND STEEL COMP 1040 OVERALL | | SPECIAL FEATURES | BOTH ENDS OF BORE COUNTERBORED 0.015 IN. MIN,0.020 IN. MAX DEEP BY 0.430 IN. MIN,0.440 IN. MAX DIA | | STYLE DESIGNATOR | ROUND | | SURFACE FINISH | 63.0 MICROINCHES LEFT SIDE | | SURFACE FINISH | 63.0 MICROINCHES RIGHT SIDE | | SURFACE TREATMENT | CHROMIUM OVERALL |
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