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National Stock Number:
5310-00-550-1383
Federal Supply Class:
5310
National Item Identification Number:
005501383
Description:
WASHER,RECESSED
Detail:
A WASHER OF ANY PERIPHERAL SHAPE HAVING A CENTRALLY LOCATED HOLE. BOTH BEARING SURFACES ARE PARALLEL AND FLAT, BUT ONE OR BOTH OF THE BEARING SURFACES MUST BE BROKEN BY A COUNTERBORE, COUNTERSINK, OR SIMILARLY SHAPED RECESS. THE THICKNESS MUST NOT EXCEED 25 PER CENT OF THE OUTSIDE DIAMETER OR THE LARGEST OUTSIDE DIMENSION. THE MAXIMUM LIMIT OF THE TOLERANCE OR RANGE APPLIED TO THE THICKNESS AND/OR LARGEST OUTSIDE DIMENSION MUST BE USED TO DETERMINE COMPLIANCE. EXCLUDES WASHER, CONCAVE, RETAINER, PACKING, AND THRUST TYPE WASHERS. SEE ALSO SPACER, SLEEVE; AND SPACER, STEPPED.
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Manufacturer Information:
| 2318-49-1 | 70255 | EMERSON ELECTRIC CO ALCO CONTROLS DIV | | W20874 | 70255 | EMERSON ELECTRIC CO ALCO CONTROLS DIV |
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Techincal Specification:
| MATERIAL | STEEL COMP 410 OR | | STEEL COMP 416 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND | | 40.0 ROCKWELL C MAXIMUM | | STYLE DESIGNATOR | RECESSED | | HOLE DIAMETER | 0.438 INCHES MINIMUM AND | | 0.442 INCHES MAXIMUM | | OUTSIDE DIAMETER | 0.807 INCHES MINIMUM AND | | 0.817 INCHES MAXIMUM | | OVERALL HEIGHT | 0.169 INCHES MINIMUM AND | | 0.173 INCHES MAXIMUM | | RECESS DEPTH | 0.044 INCHES MINIMUM AND | | 0.048 INCHES MAXIMUM | | MATERIAL THICKNESS | 0.167 INCHES MINIMUM AND | | 0.177 INCHES MAXIMUM | | SURFACE FINISH | 63.0 MICROINCHES TOP | | 63.0 MICROINCHES BOTTOM | | 63.0 MICROINCHES COUNTERBORE FACE | | HEAT TREATMENT | AS FABRICATED | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 70255 | | DESIGN CONTROL REFERENCE | 2318-49-1 |
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