Model: 190A4

Helical Gear

Special Features:

Letter c stamped on tooth, 136 degrees 14 min ccw from center line of keyway, two puller holes, 0.375-16 unc 2b thd on a 3.500 in. Diameter bolt circle, one over top of keyway and the other 180 deg

Properties:

Body Style
Webbed, offset, with lightening holes
Pitch Diameter
6.6000 inches
Teeth Quantity
66
Hardness Rating
59.0 rockwell c and 62.0 rockwell c
Nominallength
1.406 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Left
Pressure Angle
20.0000 degrees
Helix Angle
33.5500 degrees
Distance Between Body Face And Protruding Hub End
0.156 inches first end
Body Recess Depth
0.125 inches second end
Face Width
1.250 inches
Counterbore Diameter
2.6250 inches second end
Hub Diameter
2.250 inches first end
Style Designator
Protruding hub, recessed body
NSN
3020-00-391-0714
Part Number
190A4
Description
Gear,helical
CAGE
56442

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 190A4 NSN 3020-00-391-0714

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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