Model: 508238

Helical Gear

Properties:

Attachment Method
Mounting hole
Pitch Diameter
19.6872 inches
Teeth Quantity
111
Bore Style
Plain both ends
Features Provided
Alignment hole
Mounting Hole Type And Quantity
1 plain transversely through face and 8 counterbored transversely through face
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Right
Pressure Angle
20.0000 degrees
Helix Angle
20.0000 degrees
Face Width
1.875 inches
Bore Diameter
12.501 inches both ends
Precision Classification
Quality number 8
Mounting Hole Diameter
0.351 inches transversely through face
Material
Steel
Style Designator
Protruding hub, recessed body
NSN
3020-01-239-6578
Part Number
508238
Description
Gear,helical
CAGE
20284

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 508238 NSN 3020-01-239-6578

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

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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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