Gear Cluster NSN 3020-01-239-4227

Item Description

A cylindrical item having a full 360 degree (6.282 radians) complement of teeth on two or more surfaces. It may be a one-piece casting or composed of two or more separate items firmly held together by welding, rivets, pins, or the like, to form a single unit. It is designed to mount on a shaft. For items consisting of a shaft with an integral complement(s) or gear teeth, see gearshaft (as modified). Excludes gear subassembly, speed decreaser.

NSN: 3020-01-239-4227

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Features and Characteristics

Attachment Method

Mounting hole

Bore Style

Plain both ends

Design Type

Spur all gears

Construction

Solid

Outside Diameter

3.169 inches second gear

Nominallength

0.750 inches

Bore Diameter

1.3115 inches second end

Special Features

3 holes 0.169 in. Dia.; 1 hole 0.410 in. Dia.; heat treat to rc31-36 per mil-h-687 (140-160 ksi tensile strength); gear no. 1 data: tooth form=fulldepth, no. Of teeth=21, diametral pitch=1.2, pitch dia.=1.7500, pressure angle=20 deg., addendum=0.0833, root dia.=1.542, max. Tooth thk.=0.1289, pin dia.=0.1440, testing pressure(oz)=29-35, center distance radius=0.8739, max. Tooth-tooth composite error=0.00146, max. Total composite error=0.00351, no. Of teeth mating gear=70; gear no. 2 data: tooth form=full depth, no. Of teeth=21, diametralpitch=7.257, pitch dia.=2.8937, pressureangle=20 deg., addendum=0.1378, root dia.=2.549, max. Tooth thk.=0.2145, pin dia.=0.24686, testing pressure(oz) =33-39, max. Tooth-tooth composite error=0.00170, max. Total composite error=0.00569, no. Of teeth mating gear=28, center distance=3.3759

Material

Steel comp 4140

Material Specification

Mil-s-5626 military specification single material response

Surface Treatment

Oxide

Surface Treatment Specification

Mil-c-13924, class 1 military specification single treatment response

FSC

3020 Transmission Chain Sprockets Pulleys Gears

NIIN

012394227

NSN

3020012394227

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

014304-501

Cage Code:

62228

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 3020-01-239-4227

What are the manufacturers of nsn 3020012394227?

Meggitt Defense Systems, Inc. (62228)
Meggitt Defense Systems, Inc. (59027)

Does this nsn 3020012394227 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 3020012394227
A cylindrical item having a full 360 degree (6.282 radians) complement of teeth on two or more surfaces. it may be a one-piece casting or composed of two or more separate items firmly held together by welding, rivets, pins, or the like, to form a single unit. it is designed to mount on a shaft. for items consisting of a shaft with an integral complement(s) or gear teeth, see gearshaft (as modified). excludes gear subassembly, speed decreaser.

Does nsn 3020012394227 contain any precious metals?
No precious metal content.

Does nsn 3020012394227 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 3020012394227?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)

INC

FIIG

App. Key

Cond. Code

Status

INC:

36636

FIIG:

A270A0

App. Key:

Cond. Code:

Status:

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