3120-01-286-2558 BEARING,WASHER,THRUST Index 5310-01-286-2560 WASHER,FLAT

National Stock Number:
5310-01-286-2559

Federal Supply Class:
5310

National Item Identification Number:
012862559

Description:
WASHER,CONCAVE

Detail:
A WASHER WHICH IS ROUND WITH A CENTRALLY LOCATED HOLE. ONE BEARING SURFACE IS SMOOTH, FLAT, AND UNBROKEN, THE OTHER BEARING SURFACE IS SMOOTH, UNBROKEN, AND IS RECESSED TO FORM A CURVED OR SPHERICAL CONTOUR. SEE ALSO WASHER (1), CONVEX. EXCLUDES WASHER (1), RECESSED AND BEARING, WASHER, THRUST.


Manufacturer Information:
65155-00125-10178286SIKORSKY AIRCRAFT CORPORATION


Techincal Specification:
MATERIALTITANIUM ALLOY OVERALL
STYLE DESIGNATORCONCAVE
HOLE DIAMETER0.688 INCHES NOMINAL
RADIUS3.820 INCHES NOMINAL
OUTSIDE DIAMETER1.250 INCHES NOMINAL
RECESS DEPTH0.010 INCHES NOMINAL
MATERIAL THICKNESS0.200 INCHES NOMINAL
SURFACE FINISH32.0 MICROINCHES BOTTOM
SPECIAL FEATURESPRIME CONCAVE SURFACE ONLY; USE EC3917


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