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National Stock Number:
3120-00-913-8711
Federal Supply Class:
3120
National Item Identification Number:
009138711
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:
| 8356337 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | | MILI3501C0MPB | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| CENTER HOLE KEYWAY QUANTITY | 27 | | CENTER HOLE SHAPE STYLE | ROUND W/KEYWAYS | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 60.0 ROCKWELL B MINIMUM OVERALL | | MAJOR DIAMETER | 1.7790 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-B-13501 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | COPPER ALLOY 546-CANCELED OVERALL | | MATERIAL | OIL LUBRICATING LUBRICATION | | MINOR DIAMETER | 1.6360 INCHES MINIMUM AND 1.6410 INCHES MAXIMUM | | OUTSIDE DIAMETER | 2.4500 INCHES NOMINAL | | OVERALL THICKNESS | 0.1840 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM | | STYLE DESIGNATOR | ROUND |
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