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National Stock Number:
3120-01-350-9000
Federal Supply Class:
3120
National Item Identification Number:
013509000
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:
| 6-55745 | 81205 | THE BOEING COMPANY |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 2.1700 INCHES MINIMUM AND 2.1800 INCHES MAXIMUM | | KEY WIDTH | 0.4800 INCHES MINIMUM AND 0.4900 INCHES MAXIMUM | | OUTSIDE DIAMETER | 3.0800 INCHES MINIMUM AND 3.0900 INCHES MAXIMUM | | OVERALL THICKNESS | 0.0360 INCHES MINIMUM AND 0.0440 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-746 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | BRONZE PHOSPHOR OVERALL | | SPECIAL FEATURES | OUTSIDE DIAMETER HAS HOLES MEASURING 0.089 IN. MIN.,0.094 IN. MAX. IN 72 PLACES,3 CIRCLES-24 HOLES PER CIRCLE,EQUALLY SPACED; PART OF STABILIZERJACKSCREW | | STYLE DESIGNATOR | ROUND W/SQUARE KEYS | | SURFACE FINISH | 250.0 MICROINCHES OVERALL |
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