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National Stock Number:
5310-01-197-2400
Federal Supply Class:
5310
National Item Identification Number:
011972400
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:
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Techincal Specification:
| MATERIAL | STEEL OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | JDM 1045F,FSCM 75160 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | HARDNESS RATING | 255.0 BRINELL MINIMUM AND | | 341.0 BRINELL MAXIMUM | | STYLE DESIGNATOR | RECESSED BOTH SIDES | | HOLE DIAMETER | 1.281 INCHES NOMINAL | | OUTSIDE DIAMETER | 2.500 INCHES NOMINAL | | MATERIAL THICKNESS | 0.390 INCHES NOMINAL | | TOP RECESS DIAMETER | 1.401 INCHES NOMINAL | | BOTTOM RECESS DIAMETER | 1.401 INCHES NOMINAL | | BOTTOM RECESS ANGLE | 90.0 DEGREES NOMINAL | | TOP RECESS ANGLE | 90.0 DEGREES NOMINAL | | SURFACE FINISH | 65.0 MICROINCHES TOP | | 65.0 MICROINCHES BOTTOM |
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