Model: 7974516

Helical Gear

Properties:

Body Style
Plain, solid
Pitch Diameter
4.2000 inches
Teeth Quantity
21
Bore Style
10a w/ keyway both ends
Bore Style
W/ keyway both ends
Hardness Rating
56.0 rockwell c and 60.0 rockwell c
Outside Diameter
4.481 inches
Teeth Type
Single helix
Tooth Form
Stub
Tooth Direction
Right
Pressure Angle
20.0000 degrees
Helix Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.312 inches first end
Face Width
1.000 inches
Bore Diameter
1.772 inches both ends
Keyway Width
0.375 inches both ends
Distance From Bore Center To Keyway Bottom
1.076 inches both ends
Hub Style Designator
Plain first end
Hub Diameter
2.250 inches first end
Material
Steel comp 8620h
Material Specification
66 federal standard single material response and aisi/sae 8620h assn standard single material response
Style Designator
Protruding hub
NSN
3020-00-506-8530
Part Number
7974516
Description
Gear,helical
CAGE
19207

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 7974516 NSN 3020-00-506-8530

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:
A
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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