3120-01-357-7829 BEARING,WASHER,THRUST Index 5307-01-357-7831 STUD,SHOULDERED

National Stock Number:
3120-01-357-7830

Federal Supply Class:
3120

National Item Identification Number:
013577830

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:
53A-02-22332386ILLINOIS TOOL WKS INC LINAC DIV
53A-02-22353711NAVAL SEA SYSTEMS COMMAND
53X-02-22353711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
MATERIALPLASTIC ACETAL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONDELRIN 100AF,CAGEC 32386 MFR REF SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORROUND
OUTSIDE DIAMETER3.7300 INCHES MINIMUM AND
3.7400 INCHES MAXIMUM
CORNER SHAPESQUARE FIRST OUTSIDE CORNER
SQUARE SECOND OUTSIDE CORNER
SQUARE THIRD OUTSIDE CORNER
CHAMFERED FOURTH OUTSIDE CORNER
SQUARE FIRST INSIDE CORNER
SQUARE SECOND INSIDE CORNER
CROSS-SECTIONAL SHAPE STYLESHOULDERED
FLANGE THICKNESS0.1250 INCHES NOMINAL
OVERALL THICKNESS0.5000 INCHES NOMINAL
SHANK OUTSIDE DIAMETER2.3850 INCHES MINIMUM AND
2.3880 INCHES MAXIMUM
CENTER HOLE SHAPE STYLEROUND
DIAMETER2.1300 INCHES MINIMUM AND
2.1400 INCHES MAXIMUM


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