Model: 4B840

Spur Gear

Properties:

Body Style
Plain, solid
Attachment Method
Mounting hole
Pitch Diameter
2.6667 inches
Teeth Quantity
16
Bore Style
10b w/ 2 keyways both ends
Bore Style
W/ 2 keyways both ends
Mounting Hole Thread Series Designator
Unc axially through body, first end
Hardness Rating
50.0 rockwell c and 56.0 rockwell c
Hardness Rating
50.0 rockwell c and 56.0 rockwell c
Mounting Hole Thread Size
0.250 inches axially through body, first end
Mounting Hole Type And Quantity
2 threaded axially through body, first end
Outside Diameter
2.910 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Face Width
0.906 inches
Bore Diameter
1.500 inches both ends
Keyway Width
0.252 inches both ends
Distance From Bore Center To Keyway Bottom
0.875 inches both ends
Material
Steel comp 8645h
Material Specification
Fed standard 66 federal standard single material response
Style Designator
Hubless
NSN
3020-00-371-3431
Part Number
4B840
Description
Gear,spur
CAGE
11083

A gear, cylindrical in form, with straight teeth on the outer surface parallel to the axis of the gear. See also gear, antibacklash, spur. For bulk material, see rod, pinion.

Part 4B840 NSN 3020-00-371-3431

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05466
FIIG:
A27300
Concept No.:
1
App. Key:
AH
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

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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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