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National Stock Number:
5310-00-478-1912
Federal Supply Class:
5310
National Item Identification Number:
004781912
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:
| 266141 | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
| HOLE DIAMETER | 0.280 INCHES MINIMUM AND 0.300 INCHES MAXIMUM | | OUTSIDE DIAMETER | 0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM | | MATERIAL THICKNESS | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM | | MATERIAL | STEEL OVERALL | | RECESS ANGLE | 90.0 DEGREES NOMINAL | | RECESS DIAMETER | 0.4375 INCHES MINIMUM AND 0.4377 INCHES MAXIMUM | | STYLE DESIGNATOR | RECESSED |
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