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National Stock Number:
5310-00-283-0990
Federal Supply Class:
5310
National Item Identification Number:
002830990
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:
| 8691439 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| HOLE DIAMETER | 4.005 INCHES MINIMUM AND 4.015 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A322 ASSN STD ALL MATERIAL RESPONSES OR ASTM A331 ASSN STD ALL MATERIAL RESPONSES OVERALL | | MATERIAL THICKNESS | 0.186 INCHES MINIMUM AND 0.187 INCHES MAXIMUM | | MATERIAL | STEEL COMP 4140 OR STEEL COMP 4142 OR STEEL COMP 4145 OR STEEL COMP 4147 OR STEEL COMP 4150 OVERALL | | OUTSIDE DIAMETER | 4.609 INCHES MINIMUM AND 4.641 INCHES MAXIMUM | | OVERALL HEIGHT | 0.186 INCHES MINIMUM AND 0.187 INCHES MAXIMUM | | RECESS ANGLE | 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM | | RECESS DIAMETER | 4.290 INCHES NOMINAL | | STYLE DESIGNATOR | RECESSED | | SPECIAL FEATURES | THREE SLOTS EQUALLY SPACED ON OD 0.500 IN. W 2.312 IN. DIM FROM CENTERLINE TO BOTTOM OF SLOTS |
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