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Spur Antibacklash Gear NSN 3020-01-042-8029

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 3020-01-042-8029 NSN: 3020-01-042-8029

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Features and Characteristics

Attachment Method
Mounting hole
Pitch Diameter
1.5000 inches
Teeth Quantity
120
Bore Style
Plain both ends
Mounting Hole Thread Series Designator
Unc axially through hub, first end
Mounting Hole Thread Size
0.138 inches axially through hub, first end
Mounting Hole Type And Quantity
1 threaded axially through hub, first end
Outside Diameter
1.524 inches
Tooth Form
Standard
Pressure Angle
20.0000 degrees
Distance Between Body Face And Protruding Hub End
0.281 inches first end
Face Width
0.104 inches
Bore Diameter
0.250 inches both ends
Hub Style Designator
1 step first end
End Length
0.250 inches first end
Precision Classification
Quality number 12
End Diameter
0.500 inches first end
First Step Length
0.031 inches first end
First Step Diameter
0.688 inches first end
Material
Steel comp 303
Material Specification
Qq-s-764, cond a federal specification single material response
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35, type 1 federal specification single treatment response
Style Designator
Protruding hub
FSC
3020 Transmission Chain Sprockets Pulleys Gears
NIIN
010428029
NSN
3020010428029

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
810AS1422
Cage Code:
30003
Status:
A
MSDS:
Part Number:
P17-6-120Q12
Cage Code:
00141
Status:
A
MSDS:
Part Number:
885284-1
Cage Code:
49956
Status:
A
MSDS:
Part Number:
885284
Cage Code:
49956
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 3020-01-042-8029
What are the manufacturers of nsn 3020010428029?
Does this nsn 3020010428029 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 3020010428029
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 3020010428029 contain any precious metals?
Precious metal content is unknown.
Does nsn 3020010428029 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 3020010428029?
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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