A3-2

View detailed technical data, stock status, and sourcing information for: A3-2
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Federal Supply Group

Mechanical Power Transmission Equipment

Federal Supply Classification

3020 Gears, Pulleys, Sprockets and Transmission Chain

National Stock Number

3020-01-040-8851

Item Name Code

08109

Assigment Date

05/16/1977 (49 years ago)

3.200 inches minimum and 3.600 inches maximum pitch diameter, 34.0 v groove angle in deg, 0.625 inches nominal groove width, 3.950 inches nominal outside diameter, 0.600 inches nominal groove depth

Product Characteristics

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

Groove Depth: 0.600 inches nominal
Groove Width: 0.625 inches nominal
Outside Diameter: 3.950 inches nominal
V Groove Angle In Deg: 34.0
Pitch Diameter: 3.200 inches minimum and 3.600 inches maximum
Face Width: 0.875 inches nominal
Design Form: webbed
Groove Quantity: 1
Split Hub Feature: not included
Web/Spoke Relationship To Face Centerline: offset
Lightening Hole: not included
Integral Cooling Vane: not included
Groove Shape: v
Standard V-Belt Section Designation For Which Designed: a and b
Bore Feature: not included
Distance From Outside Flange/Rim To Hub End And Location: 0.062 inches nominal aa end
Special Features: center hole designed for split taper bushing
Material: iron cast overall
Surface Treatment: paint
Style Designator: webbed or spoked

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
7831-1032	Groove Pulley
A3-2	Groove Pulley

FAQs

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

What is the FSCG of the NSN 3020-01-040-8851?

The FSCG of the NSN 3020-01-040-8851 is 3020

Does the NSN 3020-01-040-8851 have a Schedule B code assigned?

Yes, the Schedule B code is 8487900080

Does NSN 3020-01-040-8851 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 3020-01-040-8851 contain precious materials?

Precious metal content is unknown

Does NSN 3020-01-040-8851 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 3020-01-040-8851 was assigned to the Federal Catalog?

It was assigned 49 years ago, on Mon, May 16, 1977