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National Stock Number:
3120-01-501-8645
Federal Supply Class:
3120
National Item Identification Number:
015018645
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:
| 342-7067321 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 342-7067321-141 | 53711 | NAVAL SEA SYSTEMS COMMAND | | H643-7002-141 | 96169 | ELECTRIC BOAT CORPORATION |
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Techincal Specification:
| CENTER HOLE KEYWAY QUANTITY | 12 | | CENTER HOLE SHAPE STYLE | ROUND W/KEYWAYS | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | SHOULDERED | | FLANGE THICKNESS | 0.2200 INCHES NOMINAL | | MAJOR DIAMETER | 3.7460 INCHES MINIMUM AND 3.7480 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-C-390 C90300 TY-3 FED SPEC ALL MATERIAL RESPONSES OVERALL | | MATERIAL | COPPER ALLOY 903 OVERALL | | PROPRIETARY CHARACTERISTICS | PACS | | OUTSIDE DIAMETER | 5.5500 INCHES NOMINAL | | OVERALL THICKNESS | 3.8100 INCHES NOMINAL | | SPECIAL FEATURES | EXPORT CONTROL DWG NOT TO BE RELEASED OUTSIDE USAS | | STYLE DESIGNATOR | ROUND |
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