5310-00-639-6954 WASHER,RECESSED Index 5305-00-639-6959 SCREW,MACHINE

National Stock Number:
5310-00-639-6957

Federal Supply Class:
5310

National Item Identification Number:
006396957

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:
2W10-1243999THE BOEING COMPANY
2W10-1289372ROCKWELL INTERNATIONAL CORP NORTH AMERICAN AIRCRAFT OPNS


Techincal Specification:
HOLE DIAMETER0.757 INCHES MINIMUM AND 0.770 INCHES MAXIMUM
OUTSIDE DIAMETER1.250 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 DIAMETER0.890 INCHES MINIMUM AND 0.910 INCHES MAXIMUM
STYLE DESIGNATORRECESSED
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-A-696 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTANODIZE OVERALL


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