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National Stock Number:
3120-00-776-0256
Federal Supply Class:
3120
National Item Identification Number:
007760256
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:
| 370227CLASSR | 77445 | RTX CORPORATION | | 370227R | 77445 | RTX CORPORATION |
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Techincal Specification:
| MATERIAL | STEEL OVERALL | | STYLE DESIGNATOR | ROUND | | OUTSIDE DIAMETER | 2.0800 INCHES MINIMUM AND | | 2.1000 INCHES MAXIMUM | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | SHOULDERED | | FLANGE THICKNESS | 0.3310 INCHES NOMINAL | | OVERALL THICKNESS | 0.4690 INCHES MINIMUM AND | | 0.4730 INCHES MAXIMUM | | SHANK OUTSIDE DIAMETER | 1.9700 INCHES MINIMUM AND | | 1.9705 INCHES MAXIMUM | | CENTER HOLE SHAPE STYLE | ROUND | | DIAMETER | 1.7550 INCHES MINIMUM AND | | 1.7650 INCHES MAXIMUM | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 77445 | | DESIGN CONTROL REFERENCE | 370227R |
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