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 |
|---|---|
| 02731 | MCDONNELL DOUGLAS HELICOPTER CO INC |
Federal Supply Class
Title
AIRFRAME STRUCTURAL COMPONENTS
Inclusions:
INCLUDES FLIGHT CONTROL SURFACES; INTERNAL AND EXTERNAL AUXILIARY FUEL TANKS; EXHAUST SYSTEMS; PYLONS, TRIM TABS; AIRCRAFT.
Exclusions:
EXCLUDES FITTED COVERS; HELICOPTER ROTOR BRAKE SYSTEM COMPONENTS; AIRCRAFT LOOSE EQUIPMENT AND ALTERNATE MISSION CONFIGURATION EQUIPMENT STORED ON BOARD THE AIRCRAFT.
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 |
| ABXV | BORE DIAMETER | 0.749 INCHES NOMINAL |
| STYL | STYLE DESIGNATOR | CLEVIS ENDS |
| ADGE | BORE LENGTH | 0.760 INCHES NOMINAL |
| MATT | MATERIAL | ALUMINUM ALLOY |
| CZLM | CENTER TO CENTER DISTANCE BETWEEN FULCRUM AND ARM END HOLE/SLOT/BALL | 4.750 INCHES NOMINAL 1ST END |
| FEAT | SPECIAL FEATURES | BOTH ARMS HAVE A RECESSED AREA ONBOTH SIDES WHICH IS 0.100 IN. FROM OUTER EDGE OF ARM; ARM THICKNESS IN RECESSED AREA IS 0.100 IN.; RECESSED AREA BEGINS 1.000 IN. FROM CENTER OF BOTH ARM HOLES; RECESSED AREA ENDS 0.575 IN. FROM CENTER OF FULCRUM PER HUGHES DWG 7-211525044; OVERALL WIDTH AT FULCRUM POINT IS 1.500 IN. |
| CZLM | CENTER TO CENTER DISTANCE BETWEEN FULCRUM AND ARM END HOLE/SLOT/BALL | 4.750 INCHES NOMINAL 2ND END |