Model: 8M4636

Helical Gear

Special Features:

Timing marks a and h stamped on 2nd side of gear face 99 degrees angular relationship

Properties:

Body Style
Webbed, offset, solid
Pitch Diameter
4.2000 inches
Teeth Quantity
40
Bore Style
Tapered w/keyway second end
Hardness Rating
22.8 rockwell c and 29.9 rockwell c
Outside Diameter
4.400 inches
Nominallength
1.034 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Left
Pressure Angle
20.0000 degrees
Helix Angle
17.7528 degrees
Distance Between Body Face And Protruding Hub End
0.283 inches first end
Distance Between Body Face And Recessed Hub End
0.222 inches second end
Face Width
0.750 inches
Keyway Width
0.158 inches both ends
Distance From Bore Center To Keyway Bottom
0.447 inches both ends
Taper Major Diameter
0.736 inches second end
Hub Style Designator
Plain both ends
Hub Diameter
1.550 inches first end
Hub Diameter
1.550 inches second end
Material
Steel
Style Designator
One protruding hub, one recessed hub
NSN
3020-00-921-3212
Part Number
8M4636
Description
Gear,helical
CAGE
74006

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 8M4636 NSN 3020-00-921-3212

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
197339
UFC:
96710
LTL:
65.0
LCL:
60.0
WCC:
593
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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