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National Stock Number:
3120-01-376-0884
Federal Supply Class:
3120
National Item Identification Number:
013760884
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:
| 2643-930-55FNA3 | 96169 | ELECTRIC BOAT CORPORATION | | 801-6641184FNA3 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | SHOULDERED | | DIAMETER | 1.3750 INCHES MINIMUM AND 1.3770 INCHES MAXIMUM | | OUTSIDE DIAMETER | 1.9970 INCHES MINIMUM AND 1.9990 INCHES MAXIMUM | | OVERALL THICKNESS | 0.5500 INCHES MINIMUM AND 0.5620 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | COPPER ALLOY 932 OVERALL | | STYLE DESIGNATOR | ROUND |
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