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National Stock Number:
3120-00-741-1222
Federal Supply Class:
3120
National Item Identification Number:
007411222
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:
| 3697744 | 23862 | MILITARY VEHICLES OPN GENERAL MOTORS TRUCK AND BUS GROUP MS 2603-02 | | 3697744 | 24617 | GENERAL MOTORS CORP | | 3697744 | 7X677 | GENERAL MOTORS LLC | | 7411222 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| BEARING SURFACE HOLE DIAMETER | 0.2500 INCHES NOMINAL FIRST | | BEARING SURFACE HOLE QUANTITY | 4 FIRST | | CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 2.3800 INCHES MINIMUM AND 2.3850 INCHES MAXIMUM | | HARDNESS RATING | 82.0 ROCKWELL B MINIMUM AND 89.0 ROCKWELL B MAXIMUM OVERALL | | LUBRICATION FEATURE | GROOVE FLAT BEARING SURFACE | | OUTSIDE DIAMETER | 4.0312 INCHES NOMINAL | | OVERALL THICKNESS | 0.0580 INCHES MINIMUM AND 0.0620 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-640 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1020 OR STEEL COMP 1022 OVERALL | | STYLE DESIGNATOR | ROUND |
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