3120-01-320-8677 BUSHING,SLEEVE Index 4820-01-320-8679 VALVE,CHECK

National Stock Number:
3120-01-320-8678

Federal Supply Class:
3120

National Item Identification Number:
013208678

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:
SM-C-969423-180063US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CORNER SHAPESQUARE ALL CORNERS
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
DIAMETER0.7540 INCHES MINIMUM AND 0.7640 INCHES MAXIMUM
OUTSIDE DIAMETER1.4800 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM
OVERALL THICKNESS0.0760 INCHES MINIMUM AND 0.0800 INCHES MAXIMUM
MATERIALCOTTON INSIDE DIAMETER SURFACE OF BODY
MATERIALCOTTON LARGEST OUTSIDE DIAMETER
MATERIALPLASTIC POLYAMIDE NYLON AND PLASTIC POLYTETRAFLUOROETHYLENE LEFT SIDE
MATERIALPLASTIC POLYAMIDE NYLON AND PLASTIC POLYTETRAFLUOROETHYLENE RIGHT SIDE
STYLE DESIGNATORROUND


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