NSN 3120-00-678-1780

Part Details | THRUST WASHER BEARING

3120-00-678-1780 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: 8754308, 3120-00-678-1780, 00-678-1780, 3120006781780, 006781780

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
31JAN 01, 196300-678-178013211 ( BEARING, WASHER, THRUST )
REFERENCE DRAWINGS & PICTURES

RECTANGULAR

ROUND

ROUND

Cross Reference | NSN 3120-00-678-1780
Part Number Cage Code Manufacturer
875430819207U S ARMY TANK AUTOMOTIVE COMMANDAMSTA-IM-MM
Technical Data | NSN 3120-00-678-1780
Characteristic Specifications
STYLE DESIGNATOR ROUND
OUTSIDE DIAMETER1.3800 INCHES NOMINAL
CROSS-SECTIONAL SHAPE STYLE RECTANGULAR
OVERALL THICKNESS0.3035 INCHES MINIMUM AND 0.3045 INCHES MAXIMUM
CENTER HOLE SHAPE STYLE ROUND
DIAMETER0.9670 INCHES MINIMUM AND 0.9720 INCHES MAXIMUM