Model: HB-20

Helical Gear

Properties:

Body Style
Plain, solid
Pitch Diameter
0.4419 inches
Teeth Quantity
20
Bore Style
Plain both ends
Hardness Rating
75.0 rockwell c hub and 83.0 rockwell c hub
Hardness Rating
75.0 rockwell c teeth and 83.0 rockwell c teeth
Outside Diameter
0.474 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Right
Pressure Angle
20.0000 degrees
Helix Angle
45.0000 degrees
Distance Between Body Face And Protruding Hub End
0.187 inches first end
Face Width
0.125 inches
Bore Diameter
0.1250 inches both ends
Hub Style Designator
Pinned first end
Hub Diameter
0.312 inches first end
Material
Steel comp 303s
Surface Treatment
Passivate
Style Designator
Protruding hub
NSN
3020-00-580-4029
Part Number
HB-20
Description
Gear,helical
CAGE
00328

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 HB-20 NSN 3020-00-580-4029

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
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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