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National Stock Number:
3120-01-223-7090
Federal Supply Class:
3120
National Item Identification Number:
012237090
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:
| 1276-23-523 | 44114 | BAE SYSTEMS LAND & ARMAMENTS L.P. | | 5520859 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| DIAMETER | 17.5 MILLIMETERS NOMINAL | | CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | SHOULDERED | | FLANGE THICKNESS | 2.7 MILLIMETERS NOMINAL | | HARDNESS RATING | 52.0 ROCKWELL C MINIMUM OVERALL AND 55.0 ROCKWELL C MAXIMUM OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD ALL MATERIAL RESPONSES OVERALL | | MATERIAL | STEEL COMP 4620 OVERALL OR STEEL COMP 4615 OVERALL | | PROPRIETARY CHARACTERISTICS | PACS | | OUTSIDE DIAMETER | 28.0 MILLIMETERS NOMINAL | | OVERALL THICKNESS | 3.0 MILLIMETERS MINIMUM AND 3.1 MILLIMETERS MAXIMUM | | SHANK OUTSIDE DIAMETER | 22.0 MILLIMETERS NOMINAL | | STYLE DESIGNATOR | ROUND | | SURFACE CONDITION | GROUND | | SURFACE FINISH | 0.8 MICROINCHES LEFT SIDE | | SURFACE FINISH | 0.8 MICROINCHES RIGHT SIDE | | SURFACE FINISH | 6.0 MICROINCHES LARGEST OUTSIDE DIAMETER | | SURFACE FINISH | 6.0 MICROINCHES SMALLEST OUTSIDE DIAMETER | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DOD-P-16232,TYPEM,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PHOSPHATE MANGANESE OVERALL | | TEST DATA DOCUMENT | 53711-MIL-E-6868 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
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