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National Stock Number:
3120-01-358-3712
Federal Supply Class:
3120
National Item Identification Number:
013583712
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:
| 803-6397416 PC NO 27 | 53711 | NAVAL SEA SYSTEMS COMMAND | | MS21783 | 81346 | AMERICAN SOCIETY FOR TESTING AND MATERIALS | | MS21783-12202 | 81346 | AMERICAN SOCIETY FOR TESTING AND MATERIALS | | MS21783-12202 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | | MS21783 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 0.7530 INCHES NOMINAL | | OUTSIDE DIAMETER | 1.2500 INCHES NOMINAL | | OVERALL THICKNESS | 0.0620 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-B-5687 TY1,GR 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | COPPER ALLOY 841 OVERALL | | SPECIAL FEATURES | THRUST BEARING IS TO BE IMPREGNATED 18MINIMUM WITH OIL CONFORMING TO MIL-L-6085 | | STYLE DESIGNATOR | ROUND | | SURFACE FINISH | 32.0 MICROINCHES LEFT SIDE | | SURFACE FINISH | 32.0 MICROINCHES RIGHT SIDE |
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