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National Stock Number:
5310-12-179-8851
Federal Supply Class:
5310
National Item Identification Number:
121798851
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:
| D28DIN6319-A3P | D8286 | DIN DEUTSCHES INSTITUT FUER NORMUNGEV | | D28DIN6319GALZN8C | D8286 | DIN DEUTSCHES INSTITUT FUER NORMUNGEV | | DIN6319-D28-A3P | D8286 | DIN DEUTSCHES INSTITUT FUER NORMUNGEV |
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Techincal Specification:
| DEPARTURE FROM CITED DOCUMENT | OBERFLAECHENSCHUTZ NICHT NACH GUELTIGER DIN | | FEATURES PROVIDED | CASEHARDENED | | HARDNESS RATING | 550,0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 650,0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM | | HOLE DIAMETER | 28,0 MILLIMETERS NOMINAL | | MATERIAL THICKNESS | 9,5 MILLIMETERS NOMINAL | | MATERIAL | STEEL OVERALL | | OUTSIDE DIAMETER | 44,0 MILLIMETERS NOMINAL | | RECESS ANGLE | 120,0 DEGREES NOMINAL | | RECESS DIAMETER | 37,0 MILLIMETERS NOMINAL | | STYLE DESIGNATOR | RECESSED | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ISO4042, SCHLUESSEL A3P ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ZINC AND CHROMATE OVERALL | | TEST DATA DOCUMENT | D8286-DIN6319/OKT97/ STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.). |
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