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National Stock Number:
3120-00-007-8504
Federal Supply Class:
3120
National Item Identification Number:
000078504
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:
| LW11172-1 | 80254 | TEXTRON LYCOMING INC WILLIAMSPORT PLANT | | LW11172-1 | R1120 | SATAIR A/S |
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Techincal Specification:
| DIAMETER | 1.0660 INCHES MINIMUM AND 1.0680 INCHES MAXIMUM | | CENTER HOLE SHAPE STYLE | ROUND W/TWO FLATS | | CENTER HOLE WIDTH ACROSS FLATS | 0.9420 INCHES MINIMUM AND 0.9440 INCHES MAXIMUM | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | MATERIAL DOCUMENT AND CLASSIFICATION | LW11172-1,80254 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | COPPER ALLOY OVERALL | | PROPRIETARY CHARACTERISTICS | PACS | | OUTSIDE DIAMETER | 1.7100 INCHES MINIMUM AND 1.7300 INCHES MAXIMUM | | OVERALL THICKNESS | 0.1580 INCHES MINIMUM AND 0.1590 INCHES MAXIMUM | | SPECIAL FEATURES | BOTH SIDES COUNTERBORED 0.0400 IN. TO 0.0500 IN. DEPTH,1.1900 IN. DIA0.0300 IN. RADIUS | | STYLE DESIGNATOR | ROUND | | SURFACE FINISH | 10.0 MICROINCHES LEFT SIDE | | SURFACE FINISH | 210.0 MICROINCHES RIGHT SIDE |
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