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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
89372 ROCKWELL INTERNATIONAL CORP NORTH AM

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
CZLN END HOLE/BALL DIAMETER 0.250 INCHES NOMINAL 1ST END
CZLN END HOLE/BALL DIAMETER 0.250 INCHES NOMINAL 2ND END
CZLM CENTER TO CENTER DISTANCE BETWEEN FULCRUM AND ARM END HOLE/SLOT/BALL 3.000 INCHES NOMINAL 2ND END
STYL STYLE DESIGNATOR CLEVIS ENDS
ADGE BORE LENGTH 1.031 INCHES NOMINAL
ABXV BORE DIAMETER 0.575 INCHES MINIMUM AND 0.578 INCHES MAXIMUM
MATT MATERIAL MAGNESIUM ALLOY
CZLM CENTER TO CENTER DISTANCE BETWEEN FULCRUM AND ARM END HOLE/SLOT/BALL 2.750 INCHES NOMINAL 1ST END
FEAT SPECIAL FEATURES FULCRUM BORE HAS INVOLUTE SERRATIONS

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