Model: 20706

Helical Gear

Properties:

Body Style
Webbed, solid
Spline Quantity
10 both ends
Pitch Diameter
Between 7.9250 inches and 7.9350 inches
Teeth Quantity
73
Bore Style
Straight spline both ends
Hardness Rating
53.0 rockwell c and 56.0 rockwell c
Outside Diameter
8.129 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Left
Pressure Angle
20.0000 degrees
Helix Angle
23.0000 degrees
Distance Between Body Face And Protruding Hub End
0.125 inches first end
Distance Between Body Face And Protruding Hub End
0.060 inches second end
Face Width
1.500 inches
Bore Diameter
2.047 inches both ends
Hub Style Designator
Plain first end
Hub Style Designator
Plain second end
Hub Diameter
2.690 inches first end
Hub Diameter
3.500 inches second end
Material
Steel comp 8620
Material Specification
Mil-s-8690, comp 8620 military specification single material response
Style Designator
Protruding hubs
NSN
3020-00-022-2936
Part Number
20706
Description
Gear,helical
CAGE
64986

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 20706 NSN 3020-00-022-2936

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

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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