Model: N12018

Helical Gear

Special Features:

Two puller holes 1/2-13 nc thd 7/8 in. Deep in second hub end

Properties:

Body Style
Plain, solid
Pitch Diameter
8.4938 inches
Teeth Quantity
45
Bore Style
10a w/ keyway both ends
Bore Style
W/ keyway both ends
Hardness Rating
10.0 rockwell c and 20.0 rockwell c
Outside Diameter
8.7438 inches
Nominallength
3.750 inches
Teeth Type
Single helix
Tooth Form
Standard
Tooth Direction
Right
Pressure Angle
14.5000 degrees
Distance Between Body Face And Protruding Hub End
0.250 inches second end
Distance Between Body Face And Protruding Hub End
1.000 inches first end
Face Width
2.500 inches
Bore Diameter
5.186 inches both ends
Keyway Width
0.621 inches both ends
Distance From Bore Center To Keyway Bottom
2.922 inches both ends
Hub Style Designator
Plain both ends
Hub Diameter
7.000 inches second end
Hub Diameter
6.750 inches first end
Material
Steel
Material Specification
Mil-s-890, class an military specification single material response
Style Designator
Protruding hubs
NSN
3020-00-239-0653
Part Number
N12018
Description
Gear,helical
CAGE
90099

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 N12018 NSN 3020-00-239-0653

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:
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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