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National Stock Number:
3120-00-698-9812
Federal Supply Class:
3120
National Item Identification Number:
006989812
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:
| CGB2928 | 0AX87 | JPI TRANSPORTATION PRODUCTS INC | | S1635-20048 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| MATERIAL | LEAD OVERALL | | STYLE DESIGNATOR | ROUND | | OUTSIDE DIAMETER | 6.1770 INCHES MINIMUM AND | | 6.1870 INCHES MAXIMUM | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | OVERALL THICKNESS | 0.1020 INCHES MINIMUM AND | | 0.1040 INCHES MAXIMUM | | CENTER HOLE SHAPE STYLE | ROUND W/ROUND KEYWAYS | | MAJOR DIAMETER | 5.1850 INCHES MINIMUM AND | | 5.1950 INCHES MAXIMUM | | MINOR DIAMETER | 5.0600 INCHES MINIMUM AND | | 5.0700 INCHES MAXIMUM | | CENTER HOLE KEYWAY RADIUS | 0.2500 INCHES NOMINAL | | CENTER HOLE KEYWAY QUANTITY | 4 | | LUBRICATION FEATURE | GROOVE FLAT BEARING SURFACE | | SPEC/STD CONTROLLING DATA | | | MANUFACTURERS CODE | 78286 | | MFR SOURCE CONTROLLING REFERENCE | S1635-20048 |
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