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National Stock Number:
3120-00-561-0681
Federal Supply Class:
3120
National Item Identification Number:
005610681
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:
| 8299667 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 1.5000 INCHES NOMINAL | | HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL | | KEY LENGTH | 0.8500 INCHES NOMINAL | | KEY QUANTITY | 2 | | KEY WIDTH | 0.1200 INCHES NOMINAL | | OUTSIDE DIAMETER | 1.7500 INCHES NOMINAL | | OVERALL THICKNESS | 0.1870 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM S41600 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 416 OVERALL | | SPECIAL FEATURES | EXTERNAL LUGS 180 DEG APART; 2 ROUND KEYWAYS IN CROSS-SECTION 180 DEG APART 45 DEG FROM LUGS; KEYWAYS 0.094 DEEP ON 0.3750 DIA CIRCLE PERPENDICULARTO BORE C/L | | STYLE DESIGNATOR | ROUND W/SQUARE KEYS | | SURFACE FINISH | 32.0 MICROINCHES FLAT BEARING SURFACE | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-STD-171 FN 5.4.1 MIL STD SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL |
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