The Gear Set,helical,matched, cataloged under National Stock Number 3020-01-424-9147, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-424-9147 |
| Primary Part Number | 211049016 |
| 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 | GEARSHAFT 1, 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 |
|---|---|
| 211049016 PRIMARY | Naval Sea Systems Command (USA) |
| 752-6406838-AY97 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6406838 | D/9 Drawing number reference only Naval Sea Systems Command |
| DF1706-438 AY97 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 3020-01-424-9147 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 3020-01-424-9147 has 2 manufacturer part numbers on file: 211049016 (Naval Sea Systems Command), 752-6406838-AY97 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-437-1448. Verify interchangeability with system specifications before substitution.
Key specifications for 211049016: Component Quantity: 2; Nonsupply Items and Quantities: GEARSHAFT 1, GEAR 1; Special Features: GEARSHAFT OA LG 13.680 IN.,LEFT HAND HELICAL TEETH, SHOULDERED SHAFT, HELICAL GEAR OD 7.250 IN. 67 TEETH IN. 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.