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National Stock Number:
3120-01-233-9326
Federal Supply Class:
3120
National Item Identification Number:
012339326
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:
| 202167-B | 61208 | TWIN DISC, INCORPORATED | | 202167B | K2171 | TWIN DISC INTERNATIONAL S A | | TRDD-4860-A | 60380 | TIMKEN AEROSPACE, INC DBA TORRINGTON PRODUCT | | 202167B | U2621 | MARINE & INDUSTRIAL TRANSMISSIONS LT |
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Techincal Specification:
| DIAMETER | 3.0400 INCHES MINIMUM AND 3.0550 INCHES MAXIMUM | | CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 58.0 ROCKWELL C MINIMUM OVERALL AND 62.0 ROCKWELL C MAXIMUM OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 1074 OVERALL | | PROPRIETARY CHARACTERISTICS | PACS | | OUTSIDE DIAMETER | 3.7950 INCHES MINIMUM AND 3.8100 INCHES MAXIMUM | | OVERALL THICKNESS | 0.1230 INCHES MINIMUM AND 0.1260 INCHES MAXIMUM | | STYLE DESIGNATOR | ROUND | | SURFACE TREATMENT | OXIDE FILM OVERALL |
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