Model: 8712210

Helical Gear

Special Features:

Counterore 1st end, dia 3.344 in. Nom by 0.483 in. Nom deep

Properties:

Body Style
Plain, solid
Spline Quantity
22 both ends
Attachment Method
Mounting hole
Pitch Diameter
4.2714 inches
Teeth Quantity
23
Bore Style
Involute spline both ends
Spline Pitch Diameter
3.1429 inches both ends
Hardness Rating
59.0 rockwell c and 62.0 rockwell c
Mounting Hole Type And Quantity
3 plain transversely through face
Outside Diameter
4.728 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Left
Pressure Angle
17.5000 degrees
Helix Angle
26.1666 degrees
Distance Between Body Face And Protruding Hub End
0.890 inches first end
Face Width
1.281 inches
Bore Diameter
3.303 inches both ends
Hub Style Designator
Plain first end
Hub Diameter
3.938 inches first end
Mounting Hole Diameter
0.156 inches transversely through face
Material
Steel comp 8620h or steel comp 8720h
Material Specification
66 federal standard all material responses
Style Designator
Protruding hub
NSN
3020-00-971-5020
Part Number
8712210
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 8712210 NSN 3020-00-971-5020

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:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
4.7 X 4.7 X 2.1
Paclk Weight:
4.5000lbs
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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