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National Stock Number:
3120-01-204-6968
Federal Supply Class:
3120
National Item Identification Number:
012046968
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:
| 1821265 | 15373 | SCHOONMAKER SERVICE PARTS CO INC | | 8212651 | 72915 | GENERAL MOTORS CORP ELECTRO-MOTIVE DIV |
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Techincal Specification:
| CENTER HOLE KEYWAY DEPTH | 0.0633 INCHES MINIMUM AND 0.0673 INCHES MAXIMUM | | CENTER HOLE KEYWAY QUANTITY | 1 | | CENTER HOLE KEYWAY WIDTH | 0.1260 INCHES MINIMUM AND 0.1280 INCHES MAXIMUM | | CENTER HOLE SHAPE STYLE | ROUND W/KEYWAY | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 0.7500 INCHES MINIMUM AND 0.7510 INCHES MAXIMUM | | HARDNESS RATING | 58.0 ROCKWELL C MINIMUM OVERALL | | OUTSIDE DIAMETER | 2.5000 INCHES NOMINAL | | OVERALL THICKNESS | 0.1550 INCHES MINIMUM AND 0.1570 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 1020 OVERALL | | STYLE DESIGNATOR | ROUND | | SURFACE FINISH | 10.0 MICROINCHES LEFT SIDE | | SURFACE FINISH | 10.0 MICROINCHES RIGHT SIDE |
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