3120-00-987-7103 BEARING,WASHER,THRUST Index 4820-00-987-7105 SEAT,VALVE

National Stock Number:
3120-00-987-7104

Federal Supply Class:
3120

National Item Identification Number:
009877104

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:
73553-62R1-896169ELECTRIC BOAT CORPORATION
73553-62R1PC896169ELECTRIC BOAT CORPORATION


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CORNER SHAPESQUARE ALL CORNERS
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
DIAMETER0.8700 INCHES MINIMUM AND 0.8730 INCHES MAXIMUM
OUTSIDE DIAMETER1.3660 INCHES MINIMUM AND 1.3680 INCHES MAXIMUM
OVERALL THICKNESS0.0600 INCHES MINIMUM AND 0.0630 INCHES MAXIMUM
MATERIALLUBRICANT LUBRICATION
MATERIALPLASTIC POLYAMIDE (NYLON) OVERALL
STYLE DESIGNATORROUND
SURFACE FINISH32.0 MICROINCHES LARGEST OUTSIDE DIAMETER
SURFACE FINISH32.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
SURFACE FINISH32.0 MICROINCHES LEFT SIDE
SURFACE FINISH32.0 MICROINCHES RIGHT SIDE


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