4920-00-006-4478 TEST SET,ENGINE TRIM Index 6130-00-006-4491 POWER SUPPLY

National Stock Number:
1680-00-006-4481

Federal Supply Class:
1680

National Item Identification Number:
000064481

Description:
BELL CRANK

Detail:
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).


Manufacturer Information:
S6140-62620-00978286SIKORSKY AIRCRAFT CORPORATION


Techincal Specification:
END HOLE/BALL DIAMETER0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM 2ND END
END HOLE/BALL DIAMETER0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM 1ST END
BORE DIAMETER0.249 INCHES NOMINAL
BORE LENGTH0.870 INCHES MINIMUM AND 0.875 INCHES MAXIMUM
CENTER TO CENTER DISTANCE BETWEEN FULCRUM AND ARM END HOLE/SLOT/BALL1.364 INCHES MINIMUM AND 1.412 INCHES MAXIMUM 1ST END
CENTER TO CENTER DISTANCE BETWEEN FULCRUM AND ARM END HOLE/SLOT/BALL3.984 INCHES MINIMUM AND 4.032 INCHES MAXIMUM 2ND END
FEATURES PROVIDEDBEARING
MATERIAL DOCUMENT AND CLASSIFICATIONAMS4138, COND 7079, TEMPER T6 ASSN STD SINGLE MATERIAL RESPONSE
MATERIALALUMINUM ALLOY
SPECIAL FEATURESCYCLIC PITCH CONTROL, CONTROL ASSY, ROTOR, HELICOPTER
STYLE DESIGNATORCLEVIS ENDS
SURFACE TREATMENTANODIZE


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