8712210

View detailed technical data, stock status, and sourcing information for: 8712210
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Federal Supply Group

Mechanical Power Transmission Equipment

Federal Supply Classification

3020 Gears, Pulleys, Sprockets and Transmission Chain

National Stock Number

3020-00-971-5020

Item Name Code

05464

Assigment Date

01/01/1962 (64 years ago)

A gear, cylindrical in form, with teeth on the outer surface at an angle to the axis of the gear. See also gear, antibacklash, helical:

22 both ends spline quantity, mounting hole attachment method, plain, solid body style, 23 teeth quantity, 4.2714 inches nominal pitch diameter

Product Characteristics

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

Body Style: plain, solid
Spline Quantity: 22 both ends
Attachment Method: mounting hole
Pitch Diameter: 4.2714 inches nominal
Teeth Quantity: 23
Bore Style: involute spline both ends
Spline Pitch Diameter: 3.1429 inches nominal both ends
Hardness Rating: 59.0 rockwell c minimum and 62.0 rockwell c maximum overall
Mounting Hole Type And Quantity: 3 plain transversely through face
Nominal Outside Diameter: 4.728 inches
Teeth Type: single helix
Tooth Form: standard
Tooth Direction: left
Pressure Angle: 17.5000 degrees
Helix Angle: 26.1666 degrees
Nominal Distance Between Body Face And Protruding Hub End: 0.890 inches first end
Face Nominal Width: 1.281 inches
Bore Nominal Diameter: 3.303 inches both ends
Hub Style Designator: plain first end
Hub Nominal Diameter: 3.938 inches first end
Mounting Hole Nominal Diameter: 0.156 inches transversely through face
Special Features: counterore 1st end,dia 3.344 in. nom by 0.483 in. nom deep
Material: steel comp 8620h or steel comp 8720h overall
Material Document And Classification: 66 fed std all material responses overall
Style Designator: protruding hub

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2520-00-311-6334	No Name Available	06/29/1973

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
62-8-44	Helical Gear
8712210	Helical Gear
973596R1	Helical Gear
T406-11A	Helical Gear

FAQs

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

What is the FSCG of the NSN 3020-00-971-5020?

The FSCG of the NSN 3020-00-971-5020 is 3020

Does the NSN 3020-00-971-5020 have a Schedule B code assigned?

Yes, the Schedule B code is 8483409000

Does NSN 3020-00-971-5020 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 3020-00-971-5020 contain precious materials?

Precious metal content is unknown

Does NSN 3020-00-971-5020 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 3020-00-971-5020 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962