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National Stock Number:
3120-01-232-1937
Federal Supply Class:
3120
National Item Identification Number:
012321937
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:
| 119523-001 | 22915 | NORTHROP GRUMMAN CORP ELECTRONIC SYSTEMS DEFENSIVE SYSTEM DIV | | 119523-003 | 22915 | NORTHROP GRUMMAN CORP ELECTRONIC SYSTEMS DEFENSIVE SYSTEM DIV |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | SHOULDERED | | DIAMETER | 1.0610 INCHES MINIMUM AND 1.0740 INCHES MAXIMUM | | FLANGE THICKNESS | 0.2900 INCHES MINIMUM AND 0.3000 INCHES MAXIMUM | | OUTSIDE DIAMETER | 3.2500 INCHES MINIMUM AND 3.2600 INCHES MAXIMUM | | OVERALL THICKNESS | 0.5000 INCHES NOMINAL | | MATERIAL | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL | | SHANK OUTSIDE DIAMETER | 2.4800 INCHES MINIMUM AND 2.5000 INCHES MAXIMUM | | SPECIAL FEATURES | HAS 4 HOLES 0.249-256 THROUGH LENGTH COUNTERBORED 0.389-396 DIA,0.250 DEEP; USED ON PEACEKEEPER IMU | | STYLE DESIGNATOR | ROUND |
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