Model: 249-56780-21

Bell Crank

Special Features:

Fulcrum bore has involute serrations

Properties:

Bore Diameter
Between 0.575 inches and 0.578 inches
Bore Length
1.031 inches
Center To Center Distance Between Fulcrum And Arm End Hole/slot/ball
2.750 inches 1st end
Center To Center Distance Between Fulcrum And Arm End Hole/slot/ball
3.000 inches 2nd end
End Hole/ball Diameter
0.250 inches 1st end
End Hole/ball Diameter
0.250 inches 2nd end
Material
Magnesium alloy
Style Designator
Clevis ends
NSN
1680-00-906-8374
Part Number
249-56780-21
Description
Bell Crank
CAGE
89372

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).

Part 249-56780-21 NSN 1680-00-906-8374

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22321
FIIG:
A523Z0
Concept No.:
App. Key:
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
116250
UFC:
59490
LTL:
100.0
LCL:
100.0
WCC:
734
TCC:
Z
SHC:
9
ACC:
Office Supplies

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Schedule B and Export
  • Schedule B: 8803300060
  • SITC: 79295
  • End Use: Parts for military-type goods
  • NAICS: 336413
  • USDA: 1

Freight Class: Other parts of airplanes or helicopters for use in military aircraft (excludes propellers, rotors, undercarriages, and parts thereof)

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