3968521

View detailed technical data, stock status, and sourcing information for: 3968521
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Federal Supply Group

Mechanical Power Transmission Equipment

Federal Supply Classification

3020 Gears, Pulleys, Sprockets and Transmission Chain

National Stock Number

3020-01-389-9651

Item Name Code

05464

Assigment Date

05/08/1994 (32 years ago)

A gear with teeth formed on the inner surface of a cylinder or cone.

webbed, solid body style, 72 teeth quantity, 186.350 millimeters nominal pitch diameter, plain first end bore style, 45.0 rockwell c minimum and 52.0 rockwell c maximum overall hardness rating

Product Characteristics

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

Body Style: webbed, solid
Pitch Diameter: 186.350 millimeters nominal
Teeth Quantity: 72
Bore Style: plain first end
Hardness Rating: 45.0 rockwell c minimum and 52.0 rockwell c maximum overall
Nominal Outside Diameter: 191.350 millimeters
Teeth Type: single helix
Tooth Direction: left
Pressure Angle: 20.0000 degrees
Helix Angle: 15.0000 degrees
Nominal Distance Between Body Face And Protruding Hub End: 10.0 millimeters first end
Body Recess Nominal Depth: 5.00 millimeters second end
Face Nominal Width: 18.00 millimeters
Bore Nominal Diameter: 22.887 millimeters first end
Hub Style Designator: plain first end
Hub Nominal Diameter: 66.00 millimeters first end
Material: steel overall
Style Designator: protruding hub, recessed body

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
3914622	Helical Gear
3929033	Helical Gear
3968521	Helical Gear

FAQs

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

What is the FSCG of the NSN 3020-01-389-9651?

The FSCG of the NSN 3020-01-389-9651 is 3020

Does the NSN 3020-01-389-9651 have a Schedule B code assigned?

Yes, the Schedule B code is 8483409000

Does NSN 3020-01-389-9651 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 3020-01-389-9651 contain precious materials?

Item does not contain precious metal.

Does NSN 3020-01-389-9651 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 3020-01-389-9651 was assigned to the Federal Catalog?

It was assigned 32 years ago, on Sun, May 8, 1994