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National Stock Number:
3120-01-239-3600
Federal Supply Class:
3120
National Item Identification Number:
012393600
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:
| 542-521-76 PIECE 30 | 43533 | MERRITT-CHAPMAN AND SCOTT CORP NEW YORK SHIPBUILDING CO DIV | | A0E2-521-2183583 30 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
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Techincal Specification:
| DIAMETER | 2.5000 INCHES NOMINAL | | OUTSIDE DIAMETER | 4.3750 INCHES NOMINAL | | OVERALL THICKNESS | 0.1250 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-C-390 FED SPEC ALL MATERIAL RESPONSES OVERALL | | MATERIAL | COPPER ALLOY 910 OR COPPER ALLOY 932 OR COPPER ALLOY 934 OR COPPER ALLOY 938 OR COPPER ALLOY 940 OR COPPER ALLOY 943 OVERALL |
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