NSN 3120-00-255-5708

Part Details | THRUST WASHER BEARING

3120-00-255-5708 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: 6831621, 6831621, 3120-00-255-5708, 00-255-5708, 3120002555708, 002555708

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
31JUN 15, 197300-255-570813211 ( BEARING, WASHER, THRUST )
REFERENCE DRAWINGS & PICTURES

RECTANGULAR

ROUND

ROUND W/SQUARE KEYS

Cross Reference | NSN 3120-00-255-5708
Part Number Cage Code Manufacturer
683162173342ALLISON TRANSMISSION, INC.
683162163005ROLLS-ROYCE CORPORATION
Technical Data | NSN 3120-00-255-5708
Characteristic Specifications
STYLE DESIGNATOR ROUND W/SQUARE KEYS
KEY LENGTH0.2000 INCHES NOMINAL
OUTSIDE DIAMETER2.8650 INCHES MINIMUM AND 2.8850 INCHES MAXIMUM
KEY WIDTH0.4300 INCHES MINIMUM AND 0.4500 INCHES MAXIMUM
KEY QUANTITY1
CROSS-SECTIONAL SHAPE STYLE RECTANGULAR
OVERALL THICKNESS0.0720 INCHES MINIMUM AND 0.0760 INCHES MAXIMUM
CENTER HOLE SHAPE STYLE ROUND
DIAMETER2.3100 INCHES MINIMUM AND 2.3300 INCHES MAXIMUM