The Gear Cluster, cataloged under National Stock Number 3020-00-489-0563, 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 Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems. Government technical data includes 26 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 | 3020-00-489-0563 |
| Primary Part Number | 494A460-724-103 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems |
| Status | ACTIVE |
| Bore Nominal Diameter | UNABLE TO DECODE0.250 INCHES BOTH ENDS0.250 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | UNABLE TO DECODE0.500 INCHES FIRST END0.500 INCHES FIRST END IN |
| Surface Treatment Document and Classification | UNABLE TO DECODE |
| Surface Treatment Document and Classification | MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE FIRST GEARMIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE FIRST GEAR |
| Surface Treatment Document and Classification | MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE FIRST GEARUNABLE TO DECODE |
| Surface Treatment Document and Classification | MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE SECOND GEARMIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE SECOND GEAR |
| Design Type | UNABLE TO DECODESPUR SECOND GEARSPUR SECOND GEAR |
| Design Type | UNABLE TO DECODESPUR FIRST GEARSPUR FIRST GEAR |
| Bore Style | UNABLE TO DECODEPLAIN BOTH ENDSPLAIN BOTH ENDS |
| Nominal Overall Length | 0.470 INCHES0.470 INCHES IN |
| Material Document and Classification | UNABLE TO DECODEAISI 303 ASSN STD SINGLE MATERIAL RESPONSE SHAFT/HUBAISI 303 ASSN STD SINGLE MATERIAL RESPONSE SHAFT/HUB |
| Material Document and Classification | UNABLE TO DECODEQQ-A-200/3,T4 FED SPEC SINGLE MATERIAL RESPONSE FIRST GEARQQ-A-200/3,T4 FED SPEC SINGLE MATERIAL RESPONSE FIRST GEAR |
| Material Document and Classification | UNABLE TO DECODEQQ-A-200/3,T4 FED SPEC SINGLE MATERIAL RESPONSE SECOND GEARQQ-A-200/3,T4 FED SPEC SINGLE MATERIAL RESPONSE SECOND GEAR |
| Hub Style Designator | UNABLE TO DECODEPINNED FIRST ENDPINNED FIRST END |
| Hub Nominal Length | UNABLE TO DECODE0.220 INCHES FIRST END0.220 INCHES FIRST END IN |
| Nominal Outside Diameter | UNABLE TO DECODE1.8960 INCHES SECOND GEAR1.8960 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | UNABLE TO DECODE2.000 INCHES FIRST GEAR2.000 INCHES FIRST GEAR IN |
| Surface Treatment | UNABLE TO DECODEANODIZE FIRST GEARANODIZE FIRST GEAR |
| Surface Treatment | PASSIVATE SHAFT/HUBPASSIVATE SHAFT/HUB |
| Surface Treatment | PASSIVATE SHAFT/HUBUNABLE TO DECODE |
| Surface Treatment | UNABLE TO DECODEANODIZE SECOND GEARANODIZE SECOND GEAR |
| Material | UNABLE TO DECODEALUMINUM ALLOY 2024 FIRST GEARALUMINUM ALLOY 2024 FIRST GEAR |
| Material | UNABLE TO DECODEALUMINUM ALLOY 2024 SECOND GEARALUMINUM ALLOY 2024 SECOND GEAR |
| Material | UNABLE TO DECODESTEEL COMP 303 SHAFT/HUBSTEEL COMP 303 SHAFT/HUB |
| Construction | ASSEMBLEDASSEMBLED |
| Attachment Method | MOUNTING HOLEMOUNTING HOLE |
| 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 |
|---|---|
| 494A460-724-103 PRIMARY | Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems (USA) |
NSN 3020-00-489-0563 is a Gear Cluster, manufactured by Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-489-0563 has 1 manufacturer part number on file: 494A460-724-103 (Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems).
Key specifications for 494A460-724-103: Bore Nominal Diameter: UNABLE TO DECODE0.250 INCHES BOTH ENDS0.250 INCHES BOTH ENDS IN; Hub Nominal Diameter: UNABLE TO DECODE0.500 INCHES FIRST END0.500 INCHES FIRST END IN; Surface Treatment Document and Classification: UNABLE TO DECODE; Surface Treatment Document and Classification: MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE FIRST GEARMIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE FIRST GEAR. 26 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.