9390-00-159-7044 NONMETALLIC SPECIAL SHAPED SECTI Index 3120-00-159-7049 BUSHING,SLEEVE

National Stock Number:
3120-00-159-7047

Federal Supply Class:
3120

National Item Identification Number:
001597047

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:
258450580064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
BEARING SURFACE HOLE DIAMETER0.0940 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM FIRST
BEARING SURFACE HOLE QUANTITY1 FIRST
CENTER HOLE SHAPE STYLEROUND
CORNER SHAPESQUARE ALL CORNERS
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
DIAMETER1.0150 INCHES NOMINAL
FEATURES PROVIDEDCASEHARDENED
HARDNESS RATING58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL
LUBRICATION FEATUREGROOVE FLAT BEARING SURFACE
OUTSIDE DIAMETER1.8750 INCHES NOMINAL
OVERALL THICKNESS0.1140 INCHES MINIMUM AND 0.1160 INCHES MAXIMUM
MATERIALSTEEL COMP 4620H OR STEEL COMP 5120H OR STEEL COMP 8617H OR STEEL COMP 8620H OVERALL
STYLE DESIGNATORROUND


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