The Gear Set,helical,matched, cataloged under National Stock Number 3020-01-441-6705, 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 Naval Sea Systems Command. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-441-6705 |
| Primary Part Number | 752-6406839 ASSY 97 |
| Item Name | Gear Set,helical,matched |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Component Quantity | 2 |
| Nonsupply Items and Quantities | 53711 21109471 SHAFT 1,53711 211049449 GEAR 1 |
| 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 |
|---|---|
| 211049020 | Naval Sea Systems Command (USA) |
| 752-6406839 ASSY 97 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 752-6406839-AY9 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 6406839 | D/9 Drawing number reference only Naval Sea Systems Command |
| DF-1706 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
| DF-1706-439 ASSY 97 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 3020-01-441-6705 is a Gear Set,helical,matched, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-441-6705 has 2 manufacturer part numbers on file: 211049020 (Naval Sea Systems Command), 752-6406839 ASSY 97 (Naval Sea Systems Command).
5 possible matches (shared part number, not a government interchangeability claim): 3020-01-441-6906, 3040-01-441-9410, 3040-01-444-1456. Verify interchangeability with system specifications before substitution.
Key specifications for 752-6406839 ASSY 97: Component Quantity: 2; Nonsupply Items and Quantities: 53711 21109471 SHAFT 1,53711 211049449 GEAR 1; End Item Identification: SEAWOLF CLASS. 2 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.