NSN 3120-00-253-7055
Part Details | THRUST WASHER BEARING
3120-00-253-7055 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: BAS24358, BAS24358, 3120-00-253-7055, 00-253-7055, 3120002537055, 002537055
Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
---|---|---|---|
31 | JUL 18, 1969 | 00-253-7055 | 13211 ( BEARING, WASHER, THRUST ) |
REFERENCE DRAWINGS & PICTURES
SHOULDERED

ROUND

ROUND

Cross Reference | NSN 3120-00-253-7055
Part Number | Cage Code | Manufacturer |
---|---|---|
BAS24358 | 80070 | LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN |
BAS24358 | 78567 | SPECO CORP |
Technical Data | NSN 3120-00-253-7055
Characteristic | Specifications |
---|---|
STYLE DESIGNATOR | ROUND |
OUTSIDE DIAMETER | 2.2500 INCHES NOMINAL |
CROSS-SECTIONAL SHAPE STYLE | SHOULDERED |
FLANGE THICKNESS | 0.0600 INCHES NOMINAL |
OVERALL THICKNESS | 0.2500 INCHES NOMINAL |
SHANK OUTSIDE DIAMETER | 2.1270 INCHES MINIMUM AND 2.1280 INCHES MAXIMUM |
CENTER HOLE SHAPE STYLE | ROUND |
DIAMETER | 1.8450 INCHES NOMINAL |
SURFACE CONDITION | GROUND |
LUBRICATION MATERIAL | LUBRICATING OIL, MIL-L-7870 |