The Gear,helical, cataloged under National Stock Number 3020-00-710-4473, 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 L3 Aviation Products, Inc. Dba L3 Technologies. Government technical data includes 8 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-710-4473 |
| Primary Part Number | 820434 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | L3 Aviation Products, Inc. Dba L3 Technologies |
| Status | ACTIVE |
| Helix Angle | 28.9500 DEGREES |
| Teeth Quantity | 105 |
| Tooth Direction | RIGHT |
| Teeth Type | SINGLE HELIX |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 1.8750 INCHES NOMINAL IN |
| Nominal Outside Diameter | 1.9270 INCHES IN |
| Pressure Angle | 14.5000 DEGREES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 820434 PRIMARY | L3 Aviation Products, Inc. Dba L3 Technologies (USA) |
NSN 3020-00-710-4473 is a Gear,helical, manufactured by L3 Aviation Products, Inc. Dba L3 Technologies, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-710-4473 has 1 manufacturer part number on file: 820434 (L3 Aviation Products, Inc. Dba L3 Technologies).
1 possible match (shared part number, not a government interchangeability claim): 6930-00-834-5925. Verify interchangeability with system specifications before substitution.
Key specifications for 820434: Helix Angle: 28.9500 DEGREES; Teeth Quantity: 105; Tooth Direction: RIGHT; Teeth Type: SINGLE HELIX. 8 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.