The Gear Cluster, cataloged under National Stock Number 3020-00-083-3146, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-083-3146 |
| Primary Part Number | 1668275 |
| 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 | 0.315 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.562 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.9997 INCHES SECOND END IN |
| Counterbore Nominal Diameter | 0.750 INCHES SECOND END IN |
| Design Type | SPUR ALL GEARS |
| Bore Style | W/COUNTERBORE BOTH ENDS |
| Nominal Overall Length | 1.119 INCHES IN |
| Hub Style Designator | PINNED FIRST END |
| Hub Nominal Length | 0.219 INCHES SECOND END IN |
| Hub Nominal Length | 0.703 INCHES FIRST END IN |
| Nominal Outside Diameter | 3.391 INCHES ALL GEARS IN |
| Material | ALUMINUM OVERALL |
| Counterbore Nominal Depth | 0.250 INCHES SECOND END IN |
| Construction | ASSEMBLED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3020-00-083-3146 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 3020-00-083-3146 has 2 manufacturer part numbers on file: 766531 (Lockheed Martin Corporation Div Rms - Mitchel Field), 1668275 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 1668275: Bore Nominal Diameter: 0.315 INCHES FIRST END IN; Hub Nominal Diameter: 0.562 INCHES FIRST END IN; Hub Nominal Diameter: 0.9997 INCHES SECOND END IN; Counterbore Nominal Diameter: 0.750 INCHES SECOND END IN. 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.