The Gear Cluster, cataloged under National Stock Number 3020-00-159-2472, 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 19 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-159-2472 |
| Primary Part Number | 494556 |
| 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 | 0.625 INCHES SECOND END IN |
| Bore Nominal Diameter | 1.030 INCHES SECOND COUNTERBORE FIRST END IN |
| Bore Nominal Diameter | 1.218 INCHES FIRST COUNTERBORE FIRST END IN |
| Hub Nominal Diameter | 0.840 INCHES SECOND END IN |
| Hub Nominal Diameter | 1.740 INCHES FIRST END IN |
| Counterbore Nominal Diameter | 0.798 INCHES SECOND COUNTERBORE FIRST END IN |
| Design Type | SPUR ALL GEARS |
| Bore Style | PLAIN SECOND END |
| Bore Style | W/STEPPED COUNTERBORE FIRST END |
| Nominal Overall Length | 1.473 INCHES IN |
| Hub Style Designator | PLAIN SECOND END |
| Hub Style Designator | 1 GROOVE FIRST END |
| Hub Nominal Length | 0.125 INCHES SECOND END IN |
| Hub Nominal Length | 0.438 INCHES FIRST END IN |
| Nominal Outside Diameter | 1.166 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 1.939 INCHES FIRST GEAR IN |
| Material | STEEL OVERALL |
| Counterbore Nominal Depth | 0.291 INCHES FIRST COUNTERBORE FIRST END IN |
| 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 |
|---|---|
| 494556 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 3020-00-159-2472 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 3020-00-159-2472 has 1 manufacturer part number on file: 494556 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 494556: Bore Nominal Diameter: 0.625 INCHES SECOND END IN; Bore Nominal Diameter: 1.030 INCHES SECOND COUNTERBORE FIRST END IN; Bore Nominal Diameter: 1.218 INCHES FIRST COUNTERBORE FIRST END IN; Hub Nominal Diameter: 0.840 INCHES SECOND END IN. 19 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.