Model: 26-644-1

Helical Gear

Properties:

Body Style
Plain, solid
Attachment Method
Mounting hole
Pitch Diameter
4.2713 inches
Teeth Quantity
39
Bore Style
10a w/ keyway both ends
Bore Style
W/ keyway both ends
Mounting Hole Thread Series Designator
Unc axially through body, first end
Hardness Rating
28.0 rockwell c and 32.0 rockwell c
Mounting Hole Thread Size
0.438 inches axially through body, first end
Mounting Hole Type And Quantity
2 threaded axially through body, first end
Outside Diameter
4.469 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Left
Pressure Angle
14.5000 degrees
Helix Angle
24.0666 degrees
Face Width
1.560 inches
Bore Diameter
2.437 inches both ends
Keyway Width
0.252 inches both ends
Distance From Bore Center To Keyway Bottom
1.346 inches both ends
Bolt Hole Circle Diameter
3.240 inches axially through body, first end
Material
Steel comp 1040 and steel comp 1045
Material
Steel comp 1040 and steel comp 1045
Material Specification
66 federal standard single material response
Style Designator
Hubless
NSN
3020-00-695-7313
Part Number
26-644-1
Description
Gear,helical
CAGE
35301

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 26-644-1 NSN 3020-00-695-7313

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
095190
UFC:
49790
LTL:
70.0
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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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