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National Stock Number:
3120-00-435-7291
Federal Supply Class:
3120
National Item Identification Number:
004357291
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:
| 65C35285-7 | 18894 | AIR ARMAMENT CENTER/ EN |
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Techincal Specification:
| MATERIAL | COPPER ALLOY OR | | COPPER ALLOY 932 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-B-5687,COMP A MIL SPEC 1ST MATERIAL RESPONSE OR | | ASTM B202,58T,COMP A ASSN STD 1ST MATERIAL RESPONSE OR | | QQ-C-390 FED SPEC 2ND MATERIAL RESPONSE OR | | SAE 660 ASSN STD 2ND MATERIAL RESPONSE OVERALL | | STYLE DESIGNATOR | ROUND | | OUTSIDE DIAMETER | 1.2450 INCHES MINIMUM AND | | 1.2500 INCHES MAXIMUM | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | OVERALL THICKNESS | 0.0570 INCHES MINIMUM AND | | 0.0670 INCHES MAXIMUM | | CENTER HOLE SHAPE STYLE | ROUND | | DIAMETER | 0.7812 INCHES NOMINAL | | SURFACE FINISH | 32.0 MICROINCHES LEFT SIDE | | 63.0 MICROINCHES RIGHT SIDE | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 18894 | | DESIGN CONTROL REFERENCE | 65C35285-7 |
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