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National Stock Number:
5310-01-306-3520
Federal Supply Class:
5310
National Item Identification Number:
013063520
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:
| SS5103D08 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| MATERIAL | ALUMINUM ALLOY 5052 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-250/8,H34 FED SPEC SINGLE MATERIAL RESPONSE OR | | QQ-A-250/8,H36 FED SPEC SINGLE MATERIAL RESPONSE OR | | QQ-A-250/8,H38 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | ANODIZE OR | | CHROMATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 MIL SPEC 1ST TREATMENT RESPONSE OR | | MIL-C-5541 MIL SPEC 2ND TREATMENT RESPONSE OVERALL | | STYLE DESIGNATOR | RECESSED | | HOLE DIAMETER | 0.504 INCHES MINIMUM AND | | 0.515 INCHES MAXIMUM | | OUTSIDE DIAMETER | 0.870 INCHES MINIMUM AND | | 0.890 INCHES MAXIMUM | | RECESS DIAMETER | 0.604 INCHES MINIMUM AND | | 0.620 INCHES MAXIMUM | | MATERIAL THICKNESS | 0.080 INCHES NOMINAL | | RECESS ANGLE | 90.0 DEGREES NOMINAL |
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