4R4-1

View detailed technical data, stock status, and sourcing information for: 4R4-1
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Federal Supply Group

Mechanical Power Transmission Equipment

Federal Supply Classification

3020 Gears, Pulleys, Sprockets and Transmission Chain

National Stock Number

3020-00-801-5008

Item Name Code

05464

Assigment Date

01/01/1962 (64 years ago)

24 teeth quantity, involute spline both ends bore style, plain, solid body style, 23 both ends spline quantity, 3.4280 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: 23 both ends
Pitch Diameter: 3.4280 inches nominal
Teeth Quantity: 24
Bore Style: involute spline both ends
Spline Pitch Diameter: 1.4375 inches nominal both ends
Nominal Outside Diameter: 3.649 inches
Teeth Type: single helix
Tooth Form: standard
Tooth Direction: right
Pressure Angle: 20.0000 degrees
Helix Angle: 30.0000 degrees
Nominal Distance Between Body Face And Protruding Hub End: 0.188 inches both ends
Face Nominal Width: 0.625 inches
Bore Nominal Diameter: 1.510 inches both ends
Hub Style Designator: plain both ends
Hub Nominal Diameter: 2.000 inches first end
Hub Nominal Diameter: 2.000 inches second end
Special Features: teeth lead 18.6557 in.,teeth chamfered both side,additional spline,helical involute spline,rh helix,16/32 in.nom pitch dia,helix angle 13 deg 36 min 28 sec,lead 18.6557 in.,pin dia 0.030 in.,1.3341 in.min,1.3359 in.max between pins
Material: steel comp 8620 overall
Material Document And Classification: 66 fed std single material response overall
Style Designator: protruding hubs

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
4R4-1	Helical Gear

FAQs

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

What is the FSCG of the NSN 3020-00-801-5008?

The FSCG of the NSN 3020-00-801-5008 is 3020

Does the NSN 3020-00-801-5008 have a Schedule B code assigned?

Yes, the Schedule B code is 8483409000

Does NSN 3020-00-801-5008 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 3020-00-801-5008 contain precious materials?

Precious metal content is unknown

Does NSN 3020-00-801-5008 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 3020-00-801-5008 was assigned to the Federal Catalog?

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