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National Stock Number:
3120-01-389-3476
Federal Supply Class:
3120
National Item Identification Number:
013893476
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:
| 15121000 ITEM 21 | 0DHG4 | GULF COAST HOLDINGS INC DBA UNIDYNAMICS | | 15121000 ITEM 21 | 40475 | CRANE CO MIDWEST FITTINGS DIV | | CD8-5 | 29440 | W. M. BERG INC | | CD8-5 | 40475 | CRANE CO MIDWEST FITTINGS DIV | | 15121000 ITEM 21 | 88733 | CRANE MIDWEST | | 15121000 ITEM 21 | 98523 | JERED LLC | | DAH22 | 29964 | ALLIED DEVICES CORP DBA ABSOLUTE PRECISION CO |
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Techincal Specification:
| MATERIAL | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL | | STYLE DESIGNATOR | ROUND | | OUTSIDE DIAMETER | 0.7975 INCHES MINIMUM AND | | 0.8275 INCHES MAXIMUM | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | OVERALL THICKNESS | 0.0880 INCHES MINIMUM AND | | 0.0980 INCHES MAXIMUM | | CENTER HOLE SHAPE STYLE | ROUND | | DIAMETER | 0.4950 INCHES MINIMUM AND | | 0.5100 INCHES MAXIMUM |
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