3120-01-227-0639, BEARING,WASHER,THRUST

National Stock Number:
3120-01-227-0639

Federal Supply Class:
3120

National Item Identification Number:
012270639

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:

002-20136-03

32770

KATO ENGINEERING INC.

Techincal Specification:

MATERIAL	STEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	900-10643,CAGEC 32770 MFR REF SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATOR	ROUND
OUTSIDE DIAMETER	6.0000 INCHES NOMINAL
CORNER SHAPE	SQUARE FIRST OUTSIDE CORNER
	SQUARE SECOND OUTSIDE CORNER
	SQUARE FIRST INSIDE CORNER
	SQUARE SECOND INSIDE CORNER
	CHAMFERED THIRD INSIDE CORNER
	CHAMFERED FOURTH INSIDE CORNER
CROSS-SECTIONAL SHAPE STYLE	COUNTERBORED
COUNTERBORE DIAMETER	5.2500 INCHES NOMINAL
COUNTERBORE DEPTH	1.4750 INCHES NOMINAL
OVERALL THICKNESS	1.9375 INCHES NOMINAL
CENTER HOLE SHAPE STYLE	ROUND
DIAMETER	3.9190 INCHES MINIMUM AND
	3.9230 INCHES MAXIMUM
SURFACE FINISH	63.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
	63.0 MICROINCHES LEFT SIDE
	16.0 MICROINCHES RIGHT SIDE
	63.0 MICROINCHES VERTICAL COUNTERBORE SURFACE
LUBRICATION FEATURE	GROOVE COUNTERBORE DIAMETER
THE MANUFACTURERS DATA
MANUFACTURERS CODE	32770
DESIGN CONTROL REFERENCE	002-20136-03

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