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Spur Antibacklash Gear NSN 3020-00-202-8635

Item Description

An item having one fixed gear and one free gear, both having the same complement of spur gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.

NSN 3020-00-202-8635 NSN: 3020-00-202-8635

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Features and Characteristics

Pitch Diameter
0.4000 inches
Teeth Quantity
48
Bore Style
Plain both ends
Outside Diameter
0.415 inches
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.110 inches first end
Face Width
0.095 inches
Bore Diameter
0.090 inches both ends
Hub Style Designator
Plain first end
Hub Diameter
0.219 inches first end
Material
Steel comp 303 or steel comp 303se
Material Specification
Mil-s-7720 military specification all material responses
Surface Treatment
Passivate
Style Designator
Protruding hubs
FSC
3020 Transmission Chain Sprockets Pulleys Gears
NIIN
002028635
NSN
3020002028635

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
42680
Cage Code:
50027
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8483409000
  • NAICS: 333612
  • SITC: 74840
  • Description: Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately
  • End Use (Code 21180):
    Industrial machines, other

Q & A

Frequently asked questions for NSN 3020-00-202-8635
What are the manufacturers of nsn 3020002028635?
Does this nsn 3020002028635 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 3020002028635
An item having one fixed gear and one free gear, both having the same complement of spur gear teeth, mounted on a common hub. the free gear is attached to the fixed gear by springs and operates as one gear. upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. this spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. the gear is used where identical and accurate transmitted motion between gears is required.
Does nsn 3020002028635 contain any precious metals?
Precious metal content is unknown.
Does nsn 3020002028635 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 3020002028635?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
26668
FIIG:
A27300
App. Key:
AC
Cond. Code:
1
Status:
A

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