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National Stock Number:
3120-00-632-7231
Federal Supply Class:
3120
National Item Identification Number:
006327231
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:
| 6327231 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | CHAMFERED CENTER FLANGE OUTSIDE RIGHT CORNER | | CORNER SHAPE | RELIEF GROOVE FIRST INSIDE CORNER | | CORNER SHAPE | RELIEF GROOVE SECOND INSIDE CORNER | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 3.0000 INCHES MINIMUM AND 3.0005 INCHES MAXIMUM | | HARDNESS RATING | 55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM OVERALL | | OUTSIDE DIAMETER | 3.7450 INCHES MINIMUM AND 3.7500 INCHES MAXIMUM | | OVERALL THICKNESS | 0.5450 INCHES MINIMUM AND 0.5470 INCHES MAXIMUM | | MATERIAL | STEEL COMP 1018 OVERALL | | STYLE DESIGNATOR | ROUND | | SURFACE CONDITION | GROUND |
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