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National Stock Number:
3120-00-133-6367
Federal Supply Class:
3120
National Item Identification Number:
001336367
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:
| S1510-21213-14 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND W/TWO FLATS | | CENTER HOLE WIDTH ACROSS FLATS | 0.6260 INCHES MINIMUM AND 0.6280 INCHES MAXIMUM | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 0.6920 INCHES MINIMUM AND 0.6940 INCHES MAXIMUM | | OUTSIDE DIAMETER | 0.8950 INCHES MINIMUM AND 0.9000 INCHES MAXIMUM | | OVERALL THICKNESS | 0.0920 INCHES MINIMUM AND 0.0940 INCHES MAXIMUM | | SPECIAL FEATURES | NICKEL PLATING TO BE 0.010 IN. MAX THK | | STYLE DESIGNATOR | ROUND |
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