The Gear Cluster, cataloged under National Stock Number 3020-01-308-0731, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-308-0731 |
| Primary Part Number | 298374-2 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.125 INCHES SECOND END IN |
| Hub Nominal Diameter | 2.250 INCHES FIRST END IN |
| Hub Nominal Diameter | 1.500 INCHES SECOND END IN |
| Design Type | SPUR ALL GEARS |
| Bore Style | PLAIN SECOND END |
| Nominal Overall Length | 1.156 INCHES IN |
| Features Provided | INTERNAL GEAR |
| Hub Style Designator | PLAIN BOTH ENDS |
| Hub Nominal Length | 0.719 INCHES FIRST END IN |
| Hub Nominal Length | 0.188 INCHES SECOND END IN |
| Nominal Outside Diameter | 1.750 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 2.583 INCHES FIRST GEAR IN |
| Material | ALUMINUM ALLOY OVERALL |
| Construction | SOLID |
| 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 |
|---|---|
| T-8003154-2 | Lockheed Martin Corporation Div Rms (USA) |
| 298374-2 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 298374 | D/9 Drawing number reference only Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 3020-01-308-0731 is a Gear Cluster, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-308-0731 has 2 manufacturer part numbers on file: T-8003154-2 (Lockheed Martin Corporation Div Rms), 298374-2 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 298374-2: Bore Nominal Diameter: 1.125 INCHES SECOND END IN; Hub Nominal Diameter: 2.250 INCHES FIRST END IN; Hub Nominal Diameter: 1.500 INCHES SECOND END IN; Design Type: SPUR ALL GEARS. 14 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.