1680-01-521-0689, BELL CRANK

National Stock Number:
1680-01-521-0689

Federal Supply Class:
1680

National Item Identification Number:
015210689

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:

354011-5

98897

LOCKHEED MARTIN CORP

Techincal Specification:

END HOLE/BALL DIAMETER	0.5625 INCHES MINIMUM AND 0.5634 INCHES MAXIMUM 2ND END
END HOLE/BALL DIAMETER	0.6250 INCHES MINIMUM AND 0.6275 INCHES MAXIMUM 1ST END
BORE DIAMETER	0.8125 INCHES MINIMUM AND 0.8134 INCHES MAXIMUM
BORE LENGTH	0.770 INCHES MINIMUM AND 0.820 INCHES MAXIMUM
CENTER TO CENTER DISTANCE BETWEEN FULCRUM AND ARM END HOLE/SLOT/BALL	1.620 INCHES NOMINAL 1ST END
CENTER TO CENTER DISTANCE BETWEEN FULCRUM AND ARM END HOLE/SLOT/BALL	2.250 INCHES NOMINAL 2ND END
FULCRUM BORE SHAPE	PLAIN
MATERIAL	IRON CAST
STYLE DESIGNATOR	TONGUE END, VERTICAL HOLES OTHER ARM

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