NSN 3120-00-255-5707
Part Details | THRUST WASHER BEARING
3120-00-255-5707 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.
Alternate Parts: 6831622, 6831622, 3120-00-255-5707, 00-255-5707, 3120002555707, 002555707
Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
---|---|---|---|
31 | JUN 15, 1973 | 00-255-5707 | 13211 ( BEARING, WASHER, THRUST ) |
REFERENCE DRAWINGS & PICTURES
ROUND

Cross Reference | NSN 3120-00-255-5707
Part Number | Cage Code | Manufacturer |
---|---|---|
6831622 | 73342 | ALLISON TRANSMISSION, INC. |
6831622 | 63005 | ROLLS-ROYCE CORPORATION |
Technical Data | NSN 3120-00-255-5707
Characteristic | Specifications |
---|---|
OUTSIDE DIAMETER | 2.8650 INCHES MINIMUM AND 2.8850 INCHES MAXIMUM |
KEY WIDTH | 0.4300 INCHES MINIMUM AND 0.4500 INCHES MAXIMUM |
KEY QUANTITY | 1 |
OVERALL THICKNESS | 0.0890 INCHES MINIMUM AND 0.0930 INCHES MAXIMUM |
CENTER HOLE SHAPE STYLE | ROUND |
DIAMETER | 2.3100 INCHES MINIMUM AND 2.3300 INCHES MAXIMUM |