Model: T406-18A

Helical Gear

Properties:

Body Style
Webbed, solid
Pitch Diameter
6.8714 inches
Teeth Quantity
37
Bore Style
Plain both ends
Hardness Rating
59.0 rockwell c and 62.0 rockwell c
Outside Diameter
7.302 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Left
Pressure Angle
17.5000 degrees
Helix Angle
26.1770 degrees
Distance Between Body Face And Protruding Hub End
1.344 inches first end
Distance Between Body Face And Recessed Hub End
0.156 inches second end
Face Width
1.343 inches
Bore Diameter
2.625 inches both ends
Bore Depth
3.562 inches second end
Hub Style Designator
Externally splined, involute splines first end
Hub Style Designator
Split second end
Clamping Surface Length
0.094 inches second end
Hub Spline Quantity
25 first end
Hub Spline Pitch Diameter
3.6960 inches first end
Material
Steel comp 8620h or steel comp 8720h
Material Specification
Mil-s-46172 military specification all material responses
Surface Treatment
Carbon
Style Designator
One protruding hub, one recessed hub
NSN
3020-00-971-5022
Part Number
T406-18A
Description
Gear,helical
CAGE
31204

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 T406-18A NSN 3020-00-971-5022

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:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
9.7000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

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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