5310-01-286-7880 WASHER,FLAT Index 5310-01-286-7882 WASHER,FLAT

National Stock Number:
5310-01-286-7881

Federal Supply Class:
5310

National Item Identification Number:
012867881

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:
65155-00125-10265789GA RICHARDS & CO INC
65155-00125-10278286SIKORSKY AIRCRAFT CORPORATION


Techincal Specification:
HOLE DIAMETER0.688 INCHES NOMINAL
OUTSIDE DIAMETER1.600 INCHES NOMINAL
MATERIAL THICKNESS0.200 INCHES NOMINAL
MATERIALTITANIUM ALLOY OVERALL
RADIUS3.820 INCHES NOMINAL
RECESS DEPTH0.010 INCHES NOMINAL
SPECIAL FEATURESPRIME CONCAVE SURFACE ONLY; USE EC3917
STYLE DESIGNATORCONCAVE
SURFACE FINISH32.0 MICROINCHES BOTTOM


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