The Gear Cluster, cataloged under National Stock Number 3020-00-944-1404, 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 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 25 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-944-1404 |
| Primary Part Number | 549-4086-002 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| Status | ACTIVE |
| Hub Nominal Diameter | UNABLE TO DECODE0.125 INCHES BOTH ENDS0.125 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | UNABLE TO DECODE0.156 INCHES BETWEEN SECOND AND THIRD GEAR0.156 INCHES BETWEEN SECOND AND THIRD GEAR IN |
| Design Type | UNABLE TO DECODESPUR SECOND GEARSPUR SECOND GEAR |
| Design Type | UNABLE TO DECODESPUR FIRST GEARSPUR FIRST GEAR |
| Design Type | UNABLE TO DECODESPUR THIRD GEARSPUR THIRD GEAR |
| Nominal Overall Length | 0.900 INCHES0.900 INCHES IN |
| Hub Style Designator | UNABLE TO DECODE1 STEP BOTH ENDS1 STEP BOTH ENDS |
| Hub Style Designator | UNABLE TO DECODEPLAIN BETWEEN SECOND AND THIRD GEARPLAIN BETWEEN SECOND AND THIRD GEAR |
| Hub Nominal Length | UNABLE TO DECODE0.125 INCHES BETWEEN SECOND AND THIRD GEAR0.125 INCHES BETWEEN SECOND AND THIRD GEAR IN |
| Hub Nominal Length | UNABLE TO DECODE0.163 INCHES SECOND END0.163 INCHES SECOND END IN |
| Hub Nominal Length | UNABLE TO DECODE0.188 INCHES FIRST END0.188 INCHES FIRST END IN |
| Nominal Outside Diameter | UNABLE TO DECODE0.2375 INCHES SECOND GEAR0.2375 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | UNABLE TO DECODE0.2375 INCHES THIRD GEAR0.2375 INCHES THIRD GEAR IN |
| Nominal Outside Diameter | UNABLE TO DECODE0.9000 INCHES FIRST GEAR0.9000 INCHES FIRST GEAR IN |
| Surface Treatment | UNABLE TO DECODEANODIZE FIRST GEARANODIZE FIRST GEAR |
| Surface Treatment | PASSIVATE SHAFT/HUBPASSIVATE SHAFT/HUB |
| Surface Treatment | PASSIVATE SECOND GEARUNABLE TO DECODE |
| Surface Treatment | PASSIVATE SHAFT/HUBUNABLE TO DECODE |
| Surface Treatment | PASSIVATE THIRD GEARPASSIVATE THIRD GEAR |
| Surface Treatment | UNABLE TO DECODEPASSIVATE SECOND GEARPASSIVATE SECOND GEAR |
| Material | UNABLE TO DECODEALUMINUM ALLOY FIRST GEARALUMINUM ALLOY FIRST GEAR |
| Material | UNABLE TO DECODESTEEL CORROSION RESISTING SECOND GEARSTEEL CORROSION RESISTING SECOND GEAR |
| Material | UNABLE TO DECODESTEEL CORROSION RESISTING SHAFT/HUBSTEEL CORROSION RESISTING SHAFT/HUB |
| Material | UNABLE TO DECODESTEEL CORROSION RESISTING THIRD GEARSTEEL CORROSION RESISTING THIRD GEAR |
| Construction | ASSEMBLEDASSEMBLED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 549-4086-002 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
| Reference | Meaning |
|---|---|
| 278-1844-00 | 7/2 Vendor item drawing reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| 278-1844-000 | 5/1 Secondary reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
NSN 3020-00-944-1404 is a Gear Cluster, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-944-1404 has 1 manufacturer part number on file: 549-4086-002 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).
Key specifications for 549-4086-002: Hub Nominal Diameter: UNABLE TO DECODE0.125 INCHES BOTH ENDS0.125 INCHES BOTH ENDS IN; Hub Nominal Diameter: UNABLE TO DECODE0.156 INCHES BETWEEN SECOND AND THIRD GEAR0.156 INCHES BETWEEN SECOND AND THIRD GEAR IN; Design Type: UNABLE TO DECODESPUR SECOND GEARSPUR SECOND GEAR; Design Type: UNABLE TO DECODESPUR FIRST GEARSPUR FIRST GEAR. 25 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.
NSN 3020-00-944-1404 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.