Model: 4439

Helical Gear

Properties:

Body Style
Webbed, solid
Pitch Diameter
7.3330 inches
Teeth Quantity
44
Bore Style
10a w/ keyway both ends
Bore Style
W/ keyway both ends
Outside Diameter
7.5240 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Right
Pressure Angle
20.0000 degrees
Helix Angle
23.4167 degrees
Distance Between Body Face And Protruding Hub End
0.4715 inches first end
Face Width
1.500 inches
Bore Diameter
2.250 inches first end
Keyway Width
0.378 inches both ends
Distance From Bore Center To Keyway Bottom
1.3175 inches first end
Hub Style Designator
Plain both ends
Hub Diameter
2.750 inches first end
Hub Diameter
2.750 inches second end
Material
Steel comp 8620h
Style Designator
Protruding hubs
NSN
3020-00-265-7747
Part Number
4439
Description
Gear,helical
CAGE
76255

A gear, cylindrical in form, with teeth on the outer surface at an angle to the axis of the gear. See also gear, antibacklash, helical:

Part 4439 NSN 3020-00-265-7747

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05464
FIIG:
A27300
Concept No.:
1
App. Key:
AF
Cond. Code:
1
Status:
A

Material Classification

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
197339
UFC:
96710
LTL:
65.0
LCL:
--
WCC:
593
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8483409000
  • SITC: 74840
  • End Use: Industrial machines, other
  • NAICS: 333612
  • USDA: 1

Freight Class: Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately

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