NSN 3020-01-643-7721 · NIIN 016437721 · Part number AL74X1
Leeson Electric Corp · FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment · CAGE 56065
Government record, cited
NSN 3020-01-643-7721 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-643-7721. Manufacturer of record part number: AL74X1.
Also searched as3020-01-643-7721 ·
3020016437721 ·
NIIN 016437721 ·
01-643-7721 ·
FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · CAGE 56065 · AL74X1
Web/spoke Relationship to Face Centerline: NOT OFFSET
Groove Shape: V
Outside Diameter: 6.930 INCHES NOMINAL IN
Identification
NSN: 3020-01-643-7721
NIIN: 016437721
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: AL74X1
Manufacturer: Leeson Electric Corp
General Description
The Pulley,groove, cataloged under National Stock Number 3020-01-643-7721, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Leeson Electric Corp. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3020-01-643-7721
Primary Part Number
AL74X1
Item Name
Pulley,groove
FSC / FSG
3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Other items in FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3020-00-000-0091
GEAR,SPUR
3020-00-001-0027
3020-00-001-0027 · Item name not on file
3020-00-001-0028
3020-00-001-0028 · Item name not on file
3020-00-001-0063
3020-00-001-0063 · Item name not on file
3020-00-001-0064
3020-00-001-0064 · Item name not on file
3020-00-001-0066
3020-00-001-0066 · Item name not on file
3020-00-001-0071
3020-00-001-0071 · Item name not on file
3020-00-001-0072
3020-00-001-0072 · Item name not on file
Frequently Asked Questions
What is NSN 3020-01-643-7721?
NSN 3020-01-643-7721 is a Pulley,groove, manufactured by Leeson Electric Corp, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
What part numbers are listed for NSN 3020-01-643-7721?
NSN 3020-01-643-7721 has 1 manufacturer part number on file: AL74X1 (Leeson Electric Corp).
What are the specifications of AL74X1?
Key specifications for AL74X1: Bore Feature: INCLUDED; Securing Method: SETSCREW; Bore Length: 1.620 INCHES NOMINAL IN; Design Form: SPOKED. 13 specifications are documented in the U.S. Government catalog.
Is NSN 3020-01-643-7721 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.