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National Stock Number:
3120-01-291-4549
Federal Supply Class:
3120
National Item Identification Number:
012914549
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:
| 12364173 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 1.5120 INCHES MINIMUM AND 1.5180 INCHES MAXIMUM | | LUBRICATION FEATURE | GROOVE EXTERNAL SURFACE MEMBER | | OUTSIDE DIAMETER | 2.3500 INCHES MINIMUM AND 2.3700 INCHES MAXIMUM | | OVERALL THICKNESS | 0.0910 INCHES MINIMUM AND 0.0990 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | VESPEL SP 21 CAGEC 31708 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | PLASTIC POLYAMIDE (NYLON) OVERALL | | SPECIAL FEATURES | 3 GROOVES EQL SPACED EACH SIDE | | STYLE DESIGNATOR | ROUND | | SURFACE FINISH | 63.0 MICROINCHES OVERALL |
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