NSN 3120-01-109-1972

Part Details | THRUST WASHER BEARING

3120-01-109-1972 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: 11628351, 11628351, 3120-01-109-1972, 01-109-1972, 3120011091972, 011091972

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
31MAR 12, 198101-109-197213211 ( BEARING, WASHER, THRUST )
REFERENCE DRAWINGS & PICTURES

RECTANGULAR

ROUND

ROUND

Cross Reference | NSN 3120-01-109-1972
Part Number Cage Code Manufacturer
1162835197993GENERAL DYNAMICS DEFENSE SYSTEMSINC.
1162835119207U S ARMY TANK AUTOMOTIVE COMMANDAMSTA-IM-MM
Technical Data | NSN 3120-01-109-1972
Characteristic Specifications
STYLE DESIGNATOR ROUND
OUTSIDE DIAMETER4.1300 INCHES NOMINAL
CROSS-SECTIONAL SHAPE STYLE RECTANGULAR
OVERALL THICKNESS0.0970 INCHES NOMINAL
CENTER HOLE SHAPE STYLE ROUND
DIAMETER2.8210 INCHES NOMINAL
SPECIAL FEATURES8 CUT GROOVES ON FLAT BEARING SURFACE,EQUALLY SPACED,180 DEGREE GROOVES,AT 45DEGREES AROUND DIA,0.018IN. DEPTH;BRONZE ALLOY DEPTH 0.010-0.020IN.