7L0412

View detailed technical data, stock status, and sourcing information for: 7L0412
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Federal Supply Group

Mechanical Power Transmission Equipment

Federal Supply Classification

3020 Gears, Pulleys, Sprockets and Transmission Chain

National Stock Number

3020-00-499-9646

Item Name Code

08109

Assigment Date

06/25/1971 (55 years ago)

4.250 inches nominal overall length, 1.820 inches nominal bore length, 7.820 inches nominal outside diameter, 0.515 inches nominal groove depth, 0.503 inches nominal groove width

Product Characteristics

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

Groove Depth: 0.515 inches nominal
Groove Width: 0.503 inches nominal
Outside Diameter: 7.820 inches nominal
Overall Length: 4.250 inches nominal
Bore Length: 1.820 inches nominal
V Groove Angle In Deg: 38.0
Pitch Diameter: 6.813 inches nominal
Taper Bore Major Diameter: 2.494 inches nominal
Taper Bore Minor Diameter: 2.120 inches nominal
Face Width: 1.880 inches nominal
Design Form: webbed
Bore Type: tapered
Bearings: not included
Taper Major Diameter Location: aa end
Groove Quantity: 3
Counterbore Feature: not included
Keying Facility: not included
Split Hub Feature: not included
Web/Spoke Relationship To Face Centerline: offset
Lightening Hole: not included
Integral Cooling Vane: not included
Groove Shape: v
Bore Feature: included
Tapered Spline Largest Minor Diameter Location: aa end
Protruding Hub Characteristic: stepped
Hub End Outside Diameter And Location: 4.120 inches nominal aa end
Distance From Outside Flange/Rim To Hub End And Location: 1.190 inches nominal aa end
First Step Face Largest Diameter And Location: 4.499 inches nominal aa end
Second Step Face Largest Diameter And Location: 6.380 inches nominal aa end
First Step Length And Location: 1.190 inches nominal aa end
Second Step Length And Location: 0.360 inches nominal aa end
Third Step Length And Location: 0.820 inches nominal aa end
Hub End Outside Diameter And Location: 4.120 inches nominal aa end
Material: iron cast overall
Style Designator: plain

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
7L0412	Groove Pulley

FAQs

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

What is the FSCG of the NSN 3020-00-499-9646?

The FSCG of the NSN 3020-00-499-9646 is 3020

Does the NSN 3020-00-499-9646 have a Schedule B code assigned?

Yes, the Schedule B code is 8487900080

Does NSN 3020-00-499-9646 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 3020-00-499-9646 contain precious materials?

Precious metal content is unknown

Does NSN 3020-00-499-9646 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 3020-00-499-9646 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Fri, Jun 25, 1971