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National Stock Number:
3120-00-780-8511
Federal Supply Class:
3120
National Item Identification Number:
007808511
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:
| V7980 | 03670 | TYCO FIRE PRODUCTS LP | | V7980 | 53154 | PORTLAND VALVE LLC |
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Techincal Specification:
| MATERIAL | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL | | STYLE DESIGNATOR | ROUND | | OUTSIDE DIAMETER | 1.8440 INCHES NOMINAL | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | OVERALL THICKNESS | 0.1170 INCHES MINIMUM AND | | 0.1220 INCHES MAXIMUM | | CENTER HOLE SHAPE STYLE | ROUND | | DIAMETER | 1.4060 INCHES NOMINAL | | LUBRICATION FEATURE | GROOVE FLAT BEARING SURFACE | | SPECIAL FEATURES | FOUR GROOVES ON EACH SIDE |
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