5310-01-105-1870 WASHER,FINISHING Index 5310-01-105-1872 WASHER,RECESSED

National Stock Number:
5310-01-105-1871

Federal Supply Class:
5310

National Item Identification Number:
011051871

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:
SS5103C0578286SIKORSKY AIRCRAFT CORPORATION


Techincal Specification:
HOLE DIAMETER0.315 INCHES MINIMUM AND 0.324 INCHES MAXIMUM
MATERIAL THICKNESS0.080 INCHES NOMINAL
OUTSIDE DIAMETER0.593 INCHES NOMINAL
RECESS ANGLE45.0 DEGREES NOMINAL
RECESS DIAMETER0.396 INCHES MINIMUM AND 0.406 INCHES MAXIMUM
STYLE DESIGNATORRECESSED


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