139C6898

View detailed technical data, stock status, and sourcing information for: 139C6898
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Federal Supply Group

Mechanical Power Transmission Equipment

Federal Supply Classification

3020 Gears, Pulleys, Sprockets and Transmission Chain

National Stock Number

3020-00-151-7587

Item Name Code

04456

Assigment Date

01/24/1973 (53 years ago)

A toothed wheel whose teeth or sprockets are designed to be engaged with the links of a pitch chain, track, or the like. It is usually used for transmitting power.

3.000 inches nominal outside diameter, 0.670 inches nominal overall length, 0.189 inches minimum and 0.192 inches maximum drilled hole diameter, 0.670 inches nominal bore length, 0.627 inches nominal bore diameter

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Outside Diameter: 3.000 inches nominal
Overall Length: 0.670 inches nominal
Bore Diameter: 0.627 inches nominal
Bore Length: 0.670 inches nominal
Drilled Hole Diameter: 0.189 inches minimum and 0.192 inches maximum
Securing Hole Quantity: 2
Hub Outside Diameter: 1.125 inches nominal aa end
Face Width: 0.135 inches nominal
Design Form: plain
Bore Type: straight
Metallic Hardness Rating And Location: 33.0 rockwell c minimum hub and 38.0 rockwell c maximum hub
Distance From Hub End To Flange End: 0.530 inches nominal aa end
Hole Location: aa portion of hub
Securing Method: drilled hole
Protruding Hub Characteristic: plain
Teeth Row Quantity: 1
Teeth Quantity Per Row: 5
Hardness Rating Test Method: rockwell
Teeth Hardness Rating: 30.0 rockwell c minimum and 35.0 rockwell c maximum
Special Features: item name, sprocket rear unload
Material: steel comp 4130
Material Document And Classification: mil-s-6758 mil spec 1st material response and mil-s-18729, comp 4130, cond n mil spec 2nd material response
Surface Treatment: phosphate
Style Designator: plain

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
139C6898	Sprocket Wheel

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 3020-00-151-7587?

The FSCG of the NSN 3020-00-151-7587 is 3020

Does the NSN 3020-00-151-7587 have a Schedule B code assigned?

Yes, the Schedule B code is 8483901000

Does NSN 3020-00-151-7587 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 3020-00-151-7587 contain precious materials?

Precious metal content is unknown

Does NSN 3020-00-151-7587 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 3020-00-151-7587 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Wed, Jan 24, 1973