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National Stock Number:
3120-00-451-1714
Federal Supply Class:
3120
National Item Identification Number:
004511714
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.
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Manufacturer Information:
| 2584513 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | COUNTERBORE DIAMETER | 3.4062 INCHES NOMINAL | | CORNER SHAPE | CHAMFERED FIRST OUTSIDE CORNER | | CORNER SHAPE | CHAMFERED SECOND OUTSIDE CORNER | | CORNER SHAPE | SQUARE FIRST INSIDE CORNER | | CORNER SHAPE | SQUARE FOURTH INSIDE CORNER | | CORNER SHAPE | ROUND SECOND INSIDE CORNER | | CORNER SHAPE | SQUARE THIRD INSIDE CORNER | | COUNTERBORE DEPTH | 0.1875 INCHES NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | COUNTERBORED | | DIAMETER | 3.2500 INCHES NOMINAL | | OUTSIDE DIAMETER | 3.8165 INCHES MINIMUM AND 3.8175 INCHES MAXIMUM | | OVERALL THICKNESS | 0.9375 INCHES NOMINAL | | MATERIAL | STEEL COMP 4130 OR STEEL COMP 4130H OR STEEL COMP 4135H OR STEEL COMP 4140 OR STEEL COMP 4140H OVERALL | | STYLE DESIGNATOR | ROUND | | SURFACE CONDITION | GROUND |
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