3120-00-904-9763, BEARING,WASHER,THRUST

National Stock Number:
3120-00-904-9763

Federal Supply Class:
3120

National Item Identification Number:
009049763

Description:
BEARING,WASHER,THRUST

Detail:
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.

Manufacturer Information:

592224-2

73030

HAMILTON SUNDSTRAND CORPORATION

Techincal Specification:

CENTER HOLE KEYWAY DEPTH	0.1400 INCHES MINIMUM AND 0.1600 INCHES MAXIMUM
CENTER HOLE KEYWAY QUANTITY	2
CENTER HOLE KEYWAY WIDTH	0.1700 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM
CENTER HOLE SHAPE STYLE	ROUND W/KEYWAY
CORNER SHAPE	CHAMFERED FIRST INSIDE CORNER
CORNER SHAPE	CHAMFERED SECOND INSIDE CORNER
CORNER SHAPE	SQUARE FIRST OUTSIDE CORNER
CORNER SHAPE	ROUND SECOND OUTSIDE CORNER
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
DIAMETER	4.3700 INCHES MINIMUM AND 4.3900 INCHES MAXIMUM
HARDNESS RATING	58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL
OUTSIDE DIAMETER	5.7230 INCHES MINIMUM AND 5.7250 INCHES MAXIMUM
OVERALL THICKNESS	0.1950 INCHES MINIMUM AND 0.2000 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
STYLE DESIGNATOR	ROUND
SURFACE FINISH	13.0 MICROINCHES LEFT SIDE

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