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National Stock Number:
3120-01-357-8116
Federal Supply Class:
3120
National Item Identification Number:
013578116
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:
| 53A-01-121 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 53X-01-121 | 32386 | ILLINOIS TOOL WKS INC LINAC DIV | | 53X-01-121 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CORNER SHAPE | CHAMFERED FIRST INSIDE CORNER | | CORNER SHAPE | SQUARE FIRST OUTSIDE CORNER | | CORNER SHAPE | SQUARE SECOND INSIDE CORNER | | CORNER SHAPE | SQUARE SECOND OUTSIDE CORNER | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | DIAMETER | 8.2500 INCHES MINIMUM AND 8.2600 INCHES MAXIMUM | | LUBRICATION FEATURE | GROOVE LEFT SIDE | | OUTSIDE DIAMETER | 10.7500 INCHES NOMINAL | | OVERALL THICKNESS | 0.2450 INCHES MINIMUM AND 0.2480 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | DELRIN 100 AF MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | PLASTIC ACETAL OVERALL | | SPECIAL FEATURES | TWO 0.250 IN DIA THRU HOLES EQUALLY SPACED ON 9.624 IN DIA BOLT CIRCLE | | STYLE DESIGNATOR | ROUND |
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