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National Stock Number:
3120-00-389-8203
Federal Supply Class:
3120
National Item Identification Number:
003898203
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:
| 8343617 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | | B1733X | 29198 | HOMAN J AND E CO INC |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE ALL CORNERS | | CROSS-SECTIONAL SHAPE STYLE | SHOULDERED | | DIAMETER | 1.3740 INCHES MINIMUM AND 1.3750 INCHES MAXIMUM | | FLANGE THICKNESS | 0.1130 INCHES MINIMUM AND 0.1150 INCHES MAXIMUM | | OUTSIDE DIAMETER | 1.6820 INCHES MINIMUM AND 1.6920 INCHES MAXIMUM | | OVERALL THICKNESS | 0.3330 INCHES MINIMUM AND 0.3530 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-B-5687,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-B-5687,TY 1,COMP B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-L-6085 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION | | MATERIAL | COPPER ALLOY OVERALL | | MATERIAL | OIL LUBRICATING LUBRICATION | | SHANK OUTSIDE DIAMETER | 1.4980 INCHES MINIMUM AND 1.4990 INCHES MAXIMUM | | STYLE DESIGNATOR | ROUND | | SURFACE CONDITION | GROUND |
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