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Spur Antibacklash Gear NSN 3020-00-252-5446

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 3020-00-252-5446 NSN: 3020-00-252-5446

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Features and Characteristics

Attachment Method
Clamp
Pitch Diameter
Between 1.6656 inches and 1.6666 inches
Teeth Quantity
120
Bore Style
Plain both ends
Outside Diameter
1.693 inches
Nominallength
0.460 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.264 inches first end
Face Width
0.125 inches
Bore Diameter
0.187 inches both ends
Hub Style Designator
Plain both ends
Hub Diameter
0.437 inches first end
Material
Aluminum alloy 2024
Surface Treatment
Anodize
Style Designator
Protruding hubs
FSC
3020 Transmission Chain Sprockets Pulleys Gears
NIIN
002525446
NSN
3020002525446

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
GAB72A120P1-7
Cage Code:
04391
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 3020-00-252-5446
What are the manufacturers of nsn 3020002525446?
Does this nsn 3020002525446 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 3020002525446
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 3020002525446 contain any precious metals?
Precious metal content is unknown.
Does nsn 3020002525446 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 3020002525446?
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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