Spur Antibacklash Gear NSN 3020-00-479-4576

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: 3020-00-479-4576

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Features and Characteristics

Attachment Method

Clamp

Pitch Diameter

Between 1.5615 inches and 1.5625 inches

Teeth Quantity

Nominallength

0.437 inches

Tooth Form

Standard

Pressure Angle

20.0000 degrees

Distance Between Body Face And Protruding Hub End

0.312 inches first end

Face Width

0.125 inches

Bore Diameter

0.241 inches both ends

Hub Diameter

0.313 inches first end

Clamping Surface Length

0.250 inches first end

Material

Steel comp 303 hub

Material Specification

Qq-s-764, type 303, cond a federal specification single material response hub

Surface Treatment

Passivate hub

Surface Treatment Specification

Mil-f-14072, finish e300 military specification single treatment response hub

Style Designator

Protruding hub

FSC

3020 Transmission Chain Sprockets Pulleys Gears

NIIN

004794576

NSN

3020004794576

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

409716-5

Cage Code:

80020

Status:

MSDS:

Part Number:

AB150-75CT2405

Cage Code:

01351

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 3020-00-479-4576

What are the manufacturers of nsn 3020004794576?

Naval Air Warfare Center Aircraft (80020)
Southern Gear & Machine, Inc. (01351)

Does this nsn 3020004794576 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 3020004794576
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 3020004794576 contain any precious metals?
No precious metal content.

Does nsn 3020004794576 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 3020004794576?
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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Quality Inspected Parts
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