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Part Number

Part Number:
NSN:
NIIN:
Item Name:
BELL CRANK

Definition:

AN ITEM IN THE FORM OF TWO ARMS AT AN ANGLE, HAVING ITS FULCRUM AT THE APEX OF THE ANGLE, AND USED TO PROVIDE A MEANS OF CHANGING THE DIRECTION OR VARYING THE INTENSITY OF A PUSHING OR PULLING FORCE. SEE ALSO ARM (AS MODIFIED); AND LEVER (AS MODIFIED).

CAGE Information

Code Company
78286 SIKORSKY AIRCRAFT CORPORATION

Federal Supply Class

Title

MISCELLANEOUS AIRCRAFT ACCESSORI

Inclusions:

INCLUDES CONTROL ASSEMBLIES, PUSH-PULL; BRACE, POSITIONING CARGO RAMP STOWED ON BOARD; COCKPIT MOUNTED CONTROL QUADRANTS; ACTUATORS, ELECTRO-MECHANICAL AND MECHANICAL; VENTILATORS; RELIEF TUBES; MAP HOLDERS; AERIAL GLIDER TOWING ACCESSORIES ATTACHED TO AIRCRAFT; BELTS, SAFETY AND LAP; HARNESS, SHOULDER AND SAFETY; LITTER ATTACHING SUPPORTS;ELECTRIC WINDSHIELD WIPERS;AIRCRAFT ONBOARD INERT GAS GENERATORS;AIRCRAFT FURNITURE;AIRCRAFT MOUNTED WINCHES AND HOISTS;IN-FLIGHT REFUELING SYSTEM COMPONENTS, INCLUDING FUEL COMPONENTS;AIRCRAFT CURTAINS;CABLE TENSION REGULATORS;SUN VISORS;REAR-VIEW MIRRORS;MECHANICAL TRANSMISSIONS, GEARBOXES AND CONSTANT SPEED DRIVES SPECIALLY DESIGNED FOR AIRCRAFT.

Exclusions:

EXCLUDES ENGINE MOUNTED CONTROL ASSEMBLIES; FITTED COVERS, AIRCRAFT PYLONS; HELICOPTER ROTER BRAKE SYSTEM COMPONENTS; HELICOPTER AUTOMATIC STABILIZATION EQUIPMENT.

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
STYL STYLE DESIGNATOR CLEVIS ENDS
CZLN END HOLE/BALL DIAMETER 0.374 INCHES MINIMUM 1ST END AND 0.375 INCHES MAXIMUM 1ST END
CZLM CENTER TO CENTER DISTANCE BETWEEN FULCRUM AND ARM END HOLE/SLOT/BALL 4.062 INCHES NOMINAL 2ND END
ADGE BORE LENGTH 0.750 INCHES MINIMUM AND 0.755 INCHES MAXIMUM
CZLN END HOLE/BALL DIAMETER 0.374 INCHES MINIMUM 2ND END AND 0.375 INCHES MAXIMUM 2ND END
SFTT SURFACE TREATMENT ANODIZE
CZLM CENTER TO CENTER DISTANCE BETWEEN FULCRUM AND ARM END HOLE/SLOT/BALL 2.500 INCHES NOMINAL 1ST END
MATT MATERIAL ALUMINUM ALLOY
ABXV BORE DIAMETER 0.748 INCHES MINIMUM AND 0.749 INCHES MAXIMUM

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