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National Stock Number:
3120-00-661-5669
Federal Supply Class:
3120
National Item Identification Number:
006615669
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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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | SQUARE FIRST INSIDE CORNER | | CORNER SHAPE | SQUARE FIRST OUTSIDE CORNER | | CORNER SHAPE | SQUARE SECOND INSIDE CORNER | | CROSS-SECTIONAL SHAPE STYLE | TAPERED SIDE | | DIAMETER | 1.5625 INCHES NOMINAL | | FEATURES PROVIDED | CASEHARDENED | | HARDNESS RATING | 56.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL | | OUTSIDE DIAMETER | 3.0000 INCHES NOMINAL | | OUTSIDE SPHERICAL RADIUS | 3.0000 INCHES NOMINAL | | OVERALL THICKNESS | 0.7500 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-633 FED SPEC ALL MATERIAL RESPONSES OVERALL | | MATERIAL | STEEL COMP 1118 OR STEEL COMP 1115 OVERALL | | SPECIAL FEATURES | CENTER HOLE COUNTERBORED 2.6250 IN. IN DIAMETER BY 0.1250 IN. DEEP | | SPHERICAL DEPTH | 0.2500 INCHES NOMINAL | | STYLE DESIGNATOR | ROUND | | SURFACE CONDITION | GROUND |
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