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National Stock Number:
5310-00-437-8948
Federal Supply Class:
5310
National Item Identification Number:
004378948
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:
| 204-030-913-005 | 97499 | BELL TEXTRON INC | | 204-030-913-5 | 2T918 | ALCO MACHINE CO INC | | 204-030-913-5 | 54878 | ROTAIR AEROSPACE CORP | | 204-030-913-5 | 97499 | BELL TEXTRON INC | | 204-030-913-5 | A0126 | LEONARDO SPA HELICOPTERS DIVISION -PRODUCTION SITE |
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Techincal Specification:
| MATERIAL | ALUMINUM ALLOY 2024 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6,TEMPER T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | STYLE DESIGNATOR | RECESSED | | HOLE DIAMETER | 0.625 INCHES MINIMUM AND | | 0.635 INCHES MAXIMUM | | OUTSIDE DIAMETER | 2.000 INCHES NOMINAL | | RECESS DIAMETER | 0.725 INCHES MINIMUM AND | | 0.735 INCHES MAXIMUM | | MATERIAL THICKNESS | 0.390 INCHES NOMINAL | | RECESS ANGLE | 90.0 DEGREES NOMINAL | | SURFACE FINISH | 63.0 MICROINCHES ALL SURFACES | | SPECIAL FEATURES | OD CHAMFERED 0.320 IN. BY 45 DEG AND ID OPPOSITE RECESS COUNTERBORED 1.000 IN. DIA BY 0.075 IN. DEEP | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 54878 | | DESIGN CONTROL REFERENCE | 204-030-913-5 |
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