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National Stock Number:
5310-01-298-1309
Federal Supply Class:
5310
National Item Identification Number:
012981309
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:
| DIN6916-M20-A4C | 15526 | METRIC AND MULTISTANDARD COMPONENTS CORP |
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Techincal Specification:
| HOLE DIAMETER | 21.0 MILLIMETERS NOMINAL | | OUTSIDE DIAMETER | 37.0 MILLIMETERS NOMINAL | | MATERIAL THICKNESS | 4.0 MILLIMETERS NOMINAL | | MATERIAL | STEEL OVERALL | | RECESS DEPTH | 2.0 MILLIMETERS MINIMUM AND 2.5 MILLIMETERS MAXIMUM | | RECESS ANGLE | 90.0 DEGREES NOMINAL | | STYLE DESIGNATOR | RECESSED | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DIN 267,CAGEC D8286 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ZINC AND CHROMATE OVERALL |
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