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National Stock Number:
3120-00-253-7055
Federal Supply Class:
3120
National Item Identification Number:
002537055
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:
| BAS24358 | 78567 | SPECO CORP | | BAS24358 | 80070 | LOCKHEED MARTIN CORPORATION |
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Techincal Specification:
| MATERIAL | COPPER ALLOY 841 OR | | COPPER ALLOY OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-B-5687,TYPE1 GRADE 1 MIL SPEC 1ST MATERIAL RESPONSE OR | | MIL-B-5687,TYPE 1 GRADE 2 MIL SPEC 2ND MATERIAL RESPONSE OVERALL | | STYLE DESIGNATOR | ROUND | | OUTSIDE DIAMETER | 2.2500 INCHES NOMINAL | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | SHOULDERED | | FLANGE THICKNESS | 0.0600 INCHES NOMINAL | | OVERALL THICKNESS | 0.2500 INCHES NOMINAL | | SHANK OUTSIDE DIAMETER | 2.1270 INCHES MINIMUM AND | | 2.1280 INCHES MAXIMUM | | CENTER HOLE SHAPE STYLE | ROUND | | DIAMETER | 1.8450 INCHES NOMINAL | | SURFACE CONDITION | GROUND | | LUBRICATION MATERIAL | LUBRICATING OIL, MIL-L-7870 |
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