The Gear Cluster, cataloged under National Stock Number 3020-01-077-7431, 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 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-077-7431 |
| Primary Part Number | 618-4284-001 |
| 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 |
| Bore Nominal Diameter | 0.125 INCHES BOTH ENDS0.125 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.150 INCHES FIRST END0.150 INCHES FIRST END IN |
| Design Type | SPUR SECOND GEARSPUR SECOND GEAR |
| Design Type | SPUR FIRST GEARSPUR FIRST GEAR |
| Bore Style | PLAIN BOTH ENDSPLAIN BOTH ENDS |
| Nominal Overall Length | 0.221 INCHES0.221 INCHES IN |
| Hub Style Designator | 1 STEP FIRST END1 STEP FIRST END |
| Hub Nominal Length | 0.0110 INCHES FIRST END0.0110 INCHES FIRST END IN |
| Nominal Outside Diameter | 0.260 INCHES SECOND GEAR0.260 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 0.4687 INCHES FIRST GEAR0.4687 INCHES FIRST GEAR IN |
| Material | COPPER ALLOY SECOND GEARCOPPER ALLOY SECOND GEAR |
| Material | COPPER ALLOY SHAFT/HUBCOPPER ALLOY SHAFT/HUB |
| Material | PLASTIC PHENOLIC FIRST GEARPLASTIC PHENOLIC FIRST GEAR |
| Construction | ASSEMBLEDASSEMBLED |
| 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 |
|---|---|
| 618-4284-001 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
| Reference | Meaning |
|---|---|
| 618-4284 | D/9 Drawing number reference only Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
NSN 3020-01-077-7431 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 3020-01-077-7431 has 1 manufacturer part number on file: 618-4284-001 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).
Key specifications for 618-4284-001: Bore Nominal Diameter: 0.125 INCHES BOTH ENDS0.125 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.150 INCHES FIRST END0.150 INCHES FIRST END IN; Design Type: SPUR SECOND GEARSPUR SECOND GEAR; Design Type: SPUR FIRST GEARSPUR FIRST GEAR. 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.