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National Stock Number:
3120-00-631-4517
Federal Supply Class:
3120
National Item Identification Number:
006314517
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:
| 1015 | 24891 | HA AND DL MACHINE SHOP | | 35 | 12958 | NIEMAN TOOL AND MACHINE CO INC | | 5074 | 00028 | MORRISON MACHINE CO | | S1510-21399 | 78286 | SIKORSKY AIRCRAFT CORPORATION | | 5310H37-007 | 81996 | U S ARMY AVIATION AND MISSILE COMMAND | | 5310H37-007-3B | 81996 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 0.4980 INCHES MINIMUM AND 0.5020 INCHES MAXIMUM | | OUTSIDE DIAMETER | 1.8650 INCHES MINIMUM AND 1.8750 INCHES MAXIMUM | | OVERALL THICKNESS | 0.0930 INCHES MINIMUM AND 0.0940 INCHES MAXIMUM | | MATERIAL | ALUMINUM ALLOY OVERALL | | STYLE DESIGNATOR | ROUND | | SURFACE CONDITION | GROUND |
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