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National Stock Number:
3120-01-280-6932
Federal Supply Class:
3120
National Item Identification Number:
012806932
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:
| 61350-24901-101 | 78286 | SIKORSKY AIRCRAFT CORPORATION | | B109757 | 0B0B1 | MAHLE AFTERMARKET INC. |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | COUNTERBORE DIAMETER | 7.7810 INCHES MINIMUM AND 7.8120 INCHES MAXIMUM | | CORNER SHAPE | SQUARE ALL CORNERS | | COUNTERBORE DEPTH | 0.0200 INCHES MINIMUM AND 0.0250 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | COUNTERBORED | | DIAMETER | 7.0150 INCHES MINIMUM AND 7.0250 INCHES MAXIMUM | | LUBRICATION FEATURE | GROOVE LARGEST OUTSIDE DIAMETER | | OUTSIDE DIAMETER | 8.4900 INCHES MINIMUM AND 8.5100 INCHES MAXIMUM | | OVERALL THICKNESS | 0.1020 INCHES MINIMUM AND 0.1040 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 4520 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | COPPER ALLOY 544 OVERALL | | MATERIAL | OIL LUBRICATING LUBRICATION | | STYLE DESIGNATOR | ROUND W/FLAT | | WIDTH | 0.3730 INCHES NOMINAL |
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