The Gear Cluster, cataloged under National Stock Number 3020-00-009-5231, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-009-5231 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Hub Nominal Diameter | 0.780 INCHES BOTH ENDS IN |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Nominal Overall Length | 0.635 INCHES IN |
| Hub Style Designator | 1 STEP BOTH ENDS |
| Hub Nominal Length | 0.1470 INCHES FIRST END IN |
| Hub Nominal Length | 0.2031 INCHES SECOND END IN |
| Nominal Outside Diameter | 0.3000 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 0.9833 INCHES FIRST GEAR IN |
| Surface Treatment | PASSIVATE SECOND GEAR |
| Surface Treatment | PASSIVATE SHAFT/HUB |
| Surface Treatment | ANODIZE FIRST GEAR |
| Material | ALUMINUM ALLOY FIRST GEAR |
| Material | STEEL CORROSION RESISTING SECOND GEAR |
| Material | STEEL CORROSION RESISTING SHAFT/HUB |
| 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 |
| Reference | Meaning |
|---|---|
| C310087007 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-009-5231 is a Gear Cluster, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-009-5231: Hub Nominal Diameter: 0.780 INCHES BOTH ENDS IN; Design Type: SPUR SECOND GEAR; Design Type: SPUR FIRST GEAR; Nominal Overall Length: 0.635 INCHES IN. 16 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.