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National Stock Number:
3120-00-352-5879
Federal Supply Class:
3120
National Item Identification Number:
003525879
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:
| D573 | 59690 | KOEHRING CO LORAIN DIV | | D573 | 8E499 | KOEHRING CRANES AND EXCAVATORS INC SUB OF NORTHWEST ENGINEERING CO |
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Techincal Specification:
| BEARING SURFACE HOLE QUANTITY | 15 FIRST | | BEARING SURFACE HOLE DIAMETER | 0.2500 INCHES NOMINAL FIRST | | CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 1.3856 INCHES MINIMUM AND 1.3956 INCHES MAXIMUM | | FEATURES PROVIDED | CASEHARDENED | | HARDNESS RATING | 57.0 ROCKWELL C MINIMUM OVERALL | | OUTSIDE DIAMETER | 3.1250 INCHES NOMINAL | | OVERALL THICKNESS | 0.1240 INCHES MINIMUM AND 0.1270 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 1020 OVERALL | | STYLE DESIGNATOR | ROUND | | SURFACE CONDITION | GROUND | | SURFACE TREATMENT | TIN OR COPPER ALLOY OVERALL |
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