3120-00-012-4242, BEARING,WASHER,THRUST

National Stock Number:
3120-00-012-4242

Federal Supply Class:
3120

National Item Identification Number:
000124242

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:

S6135-22047-001	78286	SIKORSKY AIRCRAFT CORPORATION
S6135-22047-1	78286	SIKORSKY AIRCRAFT CORPORATION

Techincal Specification:

CENTER HOLE SHAPE STYLE	ROUND
CORNER SHAPE	SQUARE FIRST INSIDE CORNER
CORNER SHAPE	SQUARE FIRST OUTSIDE CORNER
CORNER SHAPE	SQUARE FOURTH OUTSIDE CORNER
CORNER SHAPE	SQUARE SECOND INSIDE CORNER
CORNER SHAPE	SQUARE SECOND OUTSIDE CORNER
CORNER SHAPE	SQUARE THIRD OUTSIDE CORNER
CROSS-SECTIONAL SHAPE STYLE	SHOULDERED
DIAMETER	3.0020 INCHES MINIMUM AND 3.0040 INCHES MAXIMUM
FLANGE THICKNESS	0.0610 INCHES MINIMUM AND 0.0630 INCHES MAXIMUM
LUBRICATION MATERIAL	LUBRICANT, MANUFACTURERS STANDARD
OUTSIDE DIAMETER	3.3420 INCHES MINIMUM AND 3.3520 INCHES MAXIMUM
OVERALL THICKNESS	0.1550 INCHES MINIMUM AND 0.1570 INCHES MAXIMUM
MATERIAL	COPPER ALLOY OVERALL
SHANK OUTSIDE DIAMETER	3.1260 INCHES MINIMUM AND 3.1280 INCHES MAXIMUM
STYLE DESIGNATOR	ROUND
SURFACE FINISH	100.0 MICROINCHES OVERALL

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