4730-01-185-8055 LOCKNUT,TUBE FITTING Index 4310-01-185-8057 COMPRESSOR UNIT,RECIPROCATING

National Stock Number:
5310-01-185-8056

Federal Supply Class:
5310

National Item Identification Number:
011858056

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:
L4100053-00743999THE BOEING COMPANY


Techincal Specification:
MATERIALNICKEL ALLOY 718 OVERALL
STYLE DESIGNATORRECESSED
HOLE DIAMETER0.760 INCHES MINIMUM AND
0.770 INCHES MAXIMUM
OUTSIDE DIAMETER1.220 INCHES MINIMUM AND
1.230 INCHES MAXIMUM
RECESS DIAMETER0.901 INCHES NOMINAL
MATERIAL THICKNESS0.196 INCHES NOMINAL
RECESS ANGLE88.0 DEGREES MINIMUM AND
92.0 DEGREES MAXIMUM
SURFACE FINISH32.0 MICROINCHES TOP
32.0 MICROINCHES BOTTOM
SPECIAL FEATURESSPHERICAL RADIUS 0.900 IN. MIN 0.910 IN. MAX BOTTOM OF WASHER
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH


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