2040-01-476-2668 PLATE BACKING Index 7530-01-476-2670 LABEL

National Stock Number:
5310-01-476-2669

Federal Supply Class:
5310

National Item Identification Number:
014762669

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:
153-040994756THE BOEING COMPANY
153-0409-00194756THE BOEING COMPANY
PC7-329440W. M. BERG INC


Techincal Specification:
MATERIALSTEEL COMP 303 OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
STYLE DESIGNATORRECESSED
HOLE DIAMETER0.157 INCHES MINIMUM AND
0.219 INCHES MAXIMUM
OUTSIDE DIAMETER0.344 INCHES MINIMUM AND
0.406 INCHES MAXIMUM
MATERIAL THICKNESS0.094 INCHES MINIMUM AND
0.156 INCHES MAXIMUM
RECESS ANGLE90.0 DEGREES NOMINAL


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