Model: TC291

Helical Gear

Special Features:

First end spline major diameter 1.965 in. Nom

Properties:

Body Style
Webbed, offset, solid
Spline Quantity
12 first end
Pitch Diameter
3.6250 inches
Teeth Quantity
29
Bore Style
Plain both ends
Spline Pitch Diameter
1.8438 inches first end
Hardness Rating
59.0 rockwell c and 62.0 rockwell c
Outside Diameter
3.938 inches
Nominallength
1.250 inches
Teeth Type
Single helix
Tooth Form
Special
Tooth Direction
Left
Pressure Angle
17.5000 degrees
Helix Angle
30.0000 degrees
Distance Between Body Face And Protruding Hub End
0.438 inches first end
Distance Between Body Face And Recessed Hub End
0.125 inches second end
Face Width
0.812 inches
Bore Diameter
1.315 inches both ends
Hub Style Designator
Plain second end
Hub Diameter
1.938 inches second end
Material
Steel comp 8620
Material Specification
66 aisi/sae 8620 federal standard single material response
Style Designator
One protruding hub, one recessed hub
NSN
3020-00-646-7035
Part Number
TC291
Description
Gear,helical
CAGE
01227

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 TC291 NSN 3020-00-646-7035

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:
60.0
WCC:
593
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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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