TG77

View detailed technical data, stock status, and sourcing information for: TG77
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Federal Supply Group

Mechanical Power Transmission Equipment

Federal Supply Classification

3020 Gears, Pulleys, Sprockets and Transmission Chain

National Stock Number

3020-00-288-1375

Item Name Code

05466

Assigment Date

01/01/1963 (63 years ago)

3.8330 inches nominal pitch diameter, plain, solid body style, w/ keyway both ends bore style, 23 teeth quantity, 58.0 rockwell c minimum and 63.0 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: plain, solid
Pitch Diameter: 3.8330 inches nominal
Teeth Quantity: 23
Bore Style: w/ keyway both ends
Hardness Rating: 58.0 rockwell c minimum and 63.0 rockwell c maximum overall
Nominal Outside Diameter: 4.078 inches
Nominal Overall Length: 1.781 inches
Tooth Form: standard
Pressure Angle: 20.0000 degrees
Nominal Distance Between Body Face And Protruding Hub End: 0.969 inches first end
Face Nominal Width: 0.750 inches
Bore Nominal Diameter: 2.500 inches both ends
Keyway Nominal Width: 0.377 inches both ends
Nominal Distance From Bore Center To Keyway Bottom: 1.478 inches both ends
Hub Style Designator: plain both ends
Hub Nominal Diameter: 3.188 inches first end
Hub Nominal Diameter: 3.188 inches second end
Material: steel overall
Style Designator: protruding hubs

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2520-00-318-0692	No Name Available	01/01/1963

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
0195070	Spur Gear
204915	Spur Gear
886T2	Spur Gear
8B7055	Spur Gear
BB2112	Spur Gear
TG77	Spur Gear

FAQs

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

What is the FSCG of the NSN 3020-00-288-1375?

The FSCG of the NSN 3020-00-288-1375 is 3020

Does the NSN 3020-00-288-1375 have a Schedule B code assigned?

Yes, the Schedule B code is 8483409000

Does NSN 3020-00-288-1375 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 3020-00-288-1375 contain precious materials?

Precious metal content is unknown

Does NSN 3020-00-288-1375 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 3020-00-288-1375 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963