NSN 3120-00-111-7778

Part Details | THRUST WASHER BEARING

3120-00-111-7778 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: RB21813, 3120-00-111-7778, 00-111-7778, 3120001117778, 001117778

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
31AUG 30, 196800-111-777813211 ( BEARING, WASHER, THRUST )
REFERENCE DRAWINGS & PICTURES

RECTANGULAR

ROUND W/KEYWAY

ROUND

Cross Reference | NSN 3120-00-111-7778
Part Number Cage Code Manufacturer
RB2181351663CRANE CO.DBA LEAR ROMEC
Technical Data | NSN 3120-00-111-7778
Characteristic Specifications
STYLE DESIGNATOR ROUND
OUTSIDE DIAMETER1.1250 INCHES NOMINAL
CROSS-SECTIONAL SHAPE STYLE RECTANGULAR
OVERALL THICKNESS0.1560 INCHES MINIMUM AND 0.1580 INCHES MAXIMUM
CENTER HOLE SHAPE STYLE ROUND W/KEYWAY
DIAMETER0.5630 INCHES MINIMUM AND 0.5640 INCHES MAXIMUM
CENTER HOLE KEYWAY DEPTH0.0690 INCHES MINIMUM AND 0.0720 INCHES MAXIMUM
CENTER HOLE KEYWAY WIDTH0.1270 INCHES MINIMUM AND 0.1290 INCHES MAXIMUM
CENTER HOLE KEYWAY QUANTITY2