1781912-3

View detailed technical data, stock status, and sourcing information for: 1781912-3
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Federal Supply Group

Mechanical Power Transmission Equipment

Federal Supply Classification

3020 Gears, Pulleys, Sprockets and Transmission Chain

National Stock Number

3020-00-689-5741

Item Name Code

26668

Assigment Date

02/09/1968 (58 years ago)

100 teeth quantity, 1.0416 inches nominal pitch diameter, 0.375 inches nominal overall length, plain both ends bore style, 1.061 inches nominal outside diameter

Product Characteristics

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

Pitch Diameter: 1.0416 inches nominal
Teeth Quantity: 100
Bore Style: plain both ends
Nominal Outside Diameter: 1.061 inches
Nominal Overall Length: 0.375 inches
Tooth Form: standard
Pressure Angle: 14.5000 degrees
Nominal Distance Between Body Face And Protruding Hub End: 0.250 inches first end
Face Nominal Width: 0.125 inches
Bore Nominal Diameter: 0.125 inches both ends
Hub Style Designator: pinned first end
Hub Nominal Diameter: 0.375 inches first end
Material: aluminum alloy 2024 body
Material: steel comp 303 hub
Material Document And Classification: qq-a-225/6,t4 fed spec single material response body
Material Document And Classification: qq-s-763,cond a fed spec single material response hub
Surface Treatment: anodize body
Surface Treatment: passivate hub
Style Designator: protruding hub

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
1781912-3	Spur Antibacklash Gear
1781912B	Spur Antibacklash Gear
AB500-100-125	Spur Antibacklash Gear

FAQs

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

What is the FSCG of the NSN 3020-00-689-5741?

The FSCG of the NSN 3020-00-689-5741 is 3020

Does the NSN 3020-00-689-5741 have a Schedule B code assigned?

Yes, the Schedule B code is 8483409000

Does NSN 3020-00-689-5741 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 3020-00-689-5741 contain precious materials?

Precious metal content is unknown

Does NSN 3020-00-689-5741 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 3020-00-689-5741 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Fri, Feb 9, 1968