Model: 3TF321A

Helical Gear

Properties:

Body Style
Webbed, with lightening holes
Pitch Diameter
6.7835 inches
Teeth Quantity
37
Bore Style
10a w/ keyway both ends
Bore Style
W/ keyway both ends
Hardness Rating
58.0 rockwell c and 62.0 rockwell c
Outside Diameter
7.114 inches
Nominallength
1.999 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Left
Pressure Angle
20.0000 degrees
Helix Angle
24.6200 degrees
Distance Between Body Face And Protruding Hub End
0.813 inches first end
Distance Between Body Face And Recessed Hub End
0.094 inches second end
Face Width
1.188 inches
Bore Diameter
2.349 inches both ends
Keyway Width
0.498 inches both ends
Distance From Bore Center To Keyway Bottom
1.382 inches both ends
Hub Style Designator
Plain both ends
Hub Diameter
3.000 inches first end
Hub Diameter
3.000 inches second end
Material
Steel comp 4320 or steel comp 8620h
Material
Steel comp 4320 or steel comp 8620h
Material Specification
Qq-s-624, comp 4320 federal specification 1st material response or qq-s-624, comp 8620h federal specification 2nd material response
Style Designator
One protruding hub, one recessed hub
NSN
3020-00-737-7495
Part Number
3TF321A
Description
Gear,helical
CAGE
62265

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 3TF321A NSN 3020-00-737-7495

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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