5310-00-639-6946 NUT,SHEET SPRING Index 5310-00-639-6957 WASHER,RECESSED

National Stock Number:
5310-00-639-6954

Federal Supply Class:
5310

National Item Identification Number:
006396954

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.


Manufacturer Information:
2W10-643999THE BOEING COMPANY
2W10-689372ROCKWELL INTERNATIONAL CORP NORTH AMERICAN AIRCRAFT OPNS


Techincal Specification:
HOLE DIAMETER0.378 INCHES MINIMUM AND 0.388 INCHES MAXIMUM
OUTSIDE DIAMETER0.687 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/9 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/12 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.068 INCHES MINIMUM AND 0.076 INCHES MAXIMUM
MATERIALALUMINUM ALLOY 7075 OVERALL
RECESS ANGLE90.0 DEGREES NOMINAL
RECESS DIAMETER0.483 INCHES MINIMUM AND 0.495 INCHES MAXIMUM
STYLE DESIGNATORRECESSED
SURFACE TREATMENTANODIZE OVERALL


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