3120-01-114-3855 BEARING,PLAIN,SELF-ALIGNING Index 4820-01-114-3857 VALVE,GLOBE

National Stock Number:
3120-01-114-3856

Federal Supply Class:
3120

National Item Identification Number:
011143856

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:
PMS17811-001-0118876U S ARMY AVIATION AND MISSILE COMMAND
WC10DU26124GGB LLC


Techincal Specification:
STYLE DESIGNATORROUND
OUTSIDE DIAMETER23.75 MILLIMETERS MINIMUM AND
24.00 MILLIMETERS MAXIMUM
CORNER SHAPESQUARE ALL CORNERS
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OVERALL THICKNESS1.45 MILLIMETERS MINIMUM AND
1.50 MILLIMETERS MAXIMUM
CENTER HOLE SHAPE STYLEROUND
DIAMETER12.00 MILLIMETERS MINIMUM AND
12.25 MILLIMETERS MAXIMUM


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