Spur Antibacklash Gear NSN 3020-01-425-8211

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: 3020-01-425-8211

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Features and Characteristics

Attachment Method

Slot

End Application

2320-01-123-1610

Pitch Diameter

4.1250 inches

Teeth Quantity

Bore Style

Plain both ends

Outside Diameter

4.359 inches

Pressure Angle

20.0000 degrees

Distance Between Body Face And Protruding Hub End

0.310 inches second end

Face Width

0.250 inches

Bore Diameter

0.187 inches both ends

Hub Style Designator

Split second end

Hub Diameter

0.248 inches second end

Clamping Surface Length

0.250 inches second end

Precision Classification

Quality number 10

Material

Steel comp 302 spring

Material Specification

Astm-a582 assn standard single material response second gear

Surface Treatment

Passivate

Surface Treatment Specification

Mil-std-171 military standard single treatment response

Style Designator

Protruding hub

FSC

3020 Transmission Chain Sprockets Pulleys Gears

NIIN

014258211

NSN

3020014258211

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

A168-2-1

Cage Code:

26420

Status:

MSDS:

Part Number:

12373388

Cage Code:

01365

Status:

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 3020-01-425-8211

What are the manufacturers of nsn 3020014258211?

Astro Gear And Instrument Co Inc (26420)
Marine Corps Logistics Command (01365)
U S Army Tank Automotive Command (19207)
General Dynamics-ots, Inc. (05606)

Does this nsn 3020014258211 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 3020014258211
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 3020014258211 contain any precious metals?
No precious metal content.

Does nsn 3020014258211 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 3020014258211?
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:

Cond. Code:

Status:

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Certificate of Conformance
Quality Inspected Parts
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