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National Stock Number:
3120-00-709-0392
Federal Supply Class:
3120
National Item Identification Number:
007090392
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:
| 7090392 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| MATERIAL | COPPER ALLOY OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-B-5687,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | STYLE DESIGNATOR | ROUND | | OUTSIDE DIAMETER | 6.2500 INCHES NOMINAL | | CORNER SHAPE | SQUARE FIRST OUTSIDE CORNER | | SQUARE SECOND OUTSIDE CORNER | | SQUARE THIRD OUTSIDE CORNER | | SQUARE FOURTH OUTSIDE CORNER | | SQUARE FIRST INSIDE CORNER | | SQUARE SECOND INSIDE CORNER | | CROSS-SECTIONAL SHAPE STYLE | SHOULDERED | | FLANGE THICKNESS | 0.2187 INCHES NOMINAL | | OVERALL THICKNESS | 0.2450 INCHES MINIMUM AND | | 0.2500 INCHES MAXIMUM | | SHANK OUTSIDE DIAMETER | 5.4375 INCHES NOMINAL | | CENTER HOLE SHAPE STYLE | ROUND | | DIAMETER | 5.0020 INCHES MINIMUM AND | | 5.0060 INCHES MAXIMUM | | LUBRICATION MATERIAL | LUBRICATING OIL, MIL-L-15016, SYMBOL 2190 | | CRITICALITY CODE JUSTIFICATION | ADUM AND | | ABMZ |
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