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National Stock Number:
3120-00-968-5610
Federal Supply Class:
3120
National Item Identification Number:
009685610
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:
| 386425P5 | 77445 | RTX CORPORATION | | 489609P5 | 77445 | RTX CORPORATION |
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Techincal Specification:
| MATERIAL | STEEL COMP E9310 OVERALL | | HARDNESS RATING | 30.0 ROCKWELL C MINIMUM AND | | 40.0 ROCKWELL C MAXIMUM OVERALL | | STYLE DESIGNATOR | ROUND | | OUTSIDE DIAMETER | 2.8850 INCHES MINIMUM AND | | 2.8860 INCHES MAXIMUM | | CORNER SHAPE | SQUARE FIRST OUTSIDE CORNER | | CHAMFERED SECOND OUTSIDE CORNER | | SQUARE FIRST INSIDE CORNER | | SQUARE SECOND INSIDE CORNER | | SQUARE THIRD INSIDE CORNER | | SQUARE FOURTH INSIDE CORNER | | CROSS-SECTIONAL SHAPE STYLE | COUNTERBORED | | COUNTERBORE DIAMETER | 2.6570 INCHES MINIMUM AND | | 2.6620 INCHES MAXIMUM | | COUNTERBORE DEPTH | 0.6070 INCHES MINIMUM AND | | 0.6230 INCHES MAXIMUM | | OVERALL THICKNESS | 0.6900 INCHES MINIMUM AND | | 0.7100 INCHES MAXIMUM | | CENTER HOLE SHAPE STYLE | ROUND | | DIAMETER | 2.5000 INCHES MINIMUM AND | | 2.5200 INCHES MAXIMUM | | SURFACE CONDITION | GROUND | | FEATURES PROVIDED | CASEHARDENED | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 77445 | | DESIGN CONTROL REFERENCE | 489609P5 |
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