Model: 838-739-041AND838-740-041

Helical Gear

Properties:

Body Style
Webbed, offset, with lightening holes
Attachment Method
Mounting hole
Pitch Diameter
7.0000 inches
Teeth Quantity
64
Bore Style
Plain both ends
Mounting Hole Thread Series Designator
Unc axially through body, first end
Hardness Rating
293.0 brinell standard and 331.0 brinell standard
Mounting Hole Thread Size
0.500 inches axially through body, first end
Mounting Hole Type And Quantity
3 threaded axially through body, first end
Outside Diameter
7.200 inches
Teeth Type
Single helix
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Helix Angle
23.9000 degrees
Body Recess Depth
1.125 inches first end
Face Width
1.750 inches
Bore Diameter
3.625 inches both ends
Material
Steel
Style Designator
Hubless, recessed body
NSN
3020-00-446-9989
Part Number
838-739-041AND838-740-041
Description
Gear,helical
CAGE
51729

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 838-739-041AND838-740-041 NSN 3020-00-446-9989

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:
17.3000lbs
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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