NSN 3120-00-309-4394

Part Details | THRUST WASHER BEARING

3120-00-309-4394 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: 20042688, 200042688, 3120-00-309-4394, 00-309-4394, 3120003094394, 003094394

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
31OCT 19, 197300-309-439413211 ( BEARING, WASHER, THRUST )
REFERENCE DRAWINGS & PICTURES

COUNTERBORED

ROUND

ROUND

Cross Reference | NSN 3120-00-309-4394
Part Number Cage Code Manufacturer
2004268801220SYSTRON-DONNER CORPMICROWAVE/INSTRUMENT DIV
20004268801220SYSTRON-DONNER CORPMICROWAVE/INSTRUMENT DIV
Technical Data | NSN 3120-00-309-4394
Characteristic Specifications
STYLE DESIGNATOR ROUND
OUTSIDE DIAMETER0.3290 INCHES MINIMUM AND 0.3390 INCHES MAXIMUM
CROSS-SECTIONAL SHAPE STYLE COUNTERBORED
COUNTERBORE DIAMETER0.2500 INCHES NOMINAL
COUNTERBORE DEPTH0.0200 INCHES NOMINAL
OVERALL THICKNESS0.0490 INCHES MINIMUM AND 0.0510 INCHES MAXIMUM
CENTER HOLE SHAPE STYLE ROUND
DIAMETER0.1630 INCHES MINIMUM AND 0.1690 INCHES MAXIMUM
SURFACE CONDITION GROUND