3120-01-152-2612, BEARING,WASHER,THRUST

National Stock Number:
3120-01-152-2612

Federal Supply Class:
3120

National Item Identification Number:
011522612

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:

14022644	11862	GENERAL MOTORS CORP CHEVROLET MOTOR DIV SPECIAL PRODUCTS DEPT
14022644	7X677	GENERAL MOTORS LLC
3120PL0875287	9009H	INSPEKTORAT WSPARCIA SIL ZBROJNYCH

Techincal Specification:

BEARING SURFACE HOLE QUANTITY	2 FIRST
BEARING SURFACE HOLE QUANTITY	2 SECOND
BEARING SURFACE HOLE DIAMETER	5.0 MILLIMETERS NOMINAL SECOND
BEARING SURFACE HOLE DIAMETER	8.50 MILLIMETERS MINIMUM AND 8.85 MILLIMETERS MAXIMUM FIRST
BOLT CIRCLE DIAMETER	55.0 MILLIMETERS NOMINAL SECOND
BOLT CIRCLE DIAMETER	82.0 MILLIMETERS NOMINAL FIRST
CENTER HOLE SHAPE STYLE	ROUND
CORNER SHAPE	SQUARE ALL CORNERS
CROSS-SECTIONAL SHAPE STYLE	RECTANGULAR
DIAMETER	44.62 MILLIMETERS MINIMUM AND 45.38 MILLIMETERS MAXIMUM
HARDNESS RATING	83.0 ROCKWELL B MINIMUM AND 102.0 ROCKWELL B MAXIMUM OVERALL
KEY LENGTH	14.0 MILLIMETERS NOMINAL
KEY QUANTITY	2
KEY RADIUS	10.0 MILLIMETERS NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATION	231-M,FSCM 24617 MFR REF SINGLE MATERIAL RESPONSE OVERALL
OVERALL THICKNESS	4.02 MILLIMETERS MINIMUM AND 4.10 MILLIMETERS MAXIMUM
MATERIAL	IRON CAST OVERALL
OUTSIDE DIAMETER	74.0 MILLIMETERS NOMINAL
STYLE DESIGNATOR	ROUND W/ROUND KEYS
SURFACE FINISH	125.0 MICROINCHES LEFT SIDE
SURFACE FINISH	125.0 MICROINCHES RIGHT SIDE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	4277M,FSCM 24617 MFR REF SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PHOSPHATE OVERALL

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