Spur Antibacklash Gear NSN 3020-00-146-1350

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: 3020-00-146-1350

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Features and Characteristics

Pitch Diameter

Between 0.9575 inches and 0.9582 inches

Teeth Quantity

Bore Style

W/counterbore both ends

Hardness Rating

25.0 rockwell c and 32.0 rockwell c

Outside Diameter

0.978 inches

Nominallength

0.555 inches

Tooth Form

Standard

Pressure Angle

20.0000 degrees

Distance Between Body Face And Protruding Hub End

0.244 inches first end

Face Width

0.311 inches

Bore Diameter

0.187 inches both ends

Counterbore Depth

0.156 inches both ends

Counterbore Diameter

0.500 inches both ends

Hub Style Designator

1 step first end

End Length

0.167 inches first end

Precision Classification

Quality number 12

End Diameter

0.249 inches first end

First Step Length

0.077 inches first end

First Step Diameter

0.625 inches first end

Special Features

Internal splines, 21 teeth, 120 pitch dia, 0.154 minor dia, 0.186 in. Major dia, 0.0625 in. Lg, adjacent to second end counterbore

Material

Steel comp 416

Material Specification

Qq-s-764 federal specification single material response

Surface Treatment

Passivate

Style Designator

Protruding hub

FSC

3020 Transmission Chain Sprockets Pulleys Gears

NIIN

001461350

NSN

3020001461350

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

71185

Cage Code:

03538

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 3020-00-146-1350

What are the manufacturers of nsn 3020001461350?

Lockheed Martin Corporation (03538)
Washington Scientific Industries Inc (10522)

Does this nsn 3020001461350 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 3020001461350
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 3020001461350 contain any precious metals?
No precious metal content.

Does nsn 3020001461350 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 3020001461350?
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
Quality Fast Service