The Gear Cluster, cataloged under National Stock Number 3020-00-477-9875, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-477-9875 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Hub Nominal Diameter | 0.093 INCHES BOTH ENDS IN |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Precision Classification | QUALITY NUMBER 9 OR QUALITY NUMBER 12 ALL GEARS |
| Nominal Overall Length | 1.728 INCHES IN |
| Hub Style Designator | 2 STEPS BOTH ENDS |
| Hub Nominal Length | 0.660 INCHES FIRST END IN |
| Hub Nominal Length | 0.828 INCHES SECOND END IN |
| Nominal Outside Diameter | 0.238 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 0.636 INCHES FIRST GEAR IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| C310170317 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-477-9875 is a Gear Cluster, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-477-9875: Hub Nominal Diameter: 0.093 INCHES BOTH ENDS IN; Design Type: SPUR SECOND GEAR; Design Type: SPUR FIRST GEAR; Precision Classification: QUALITY NUMBER 9 OR QUALITY NUMBER 12 ALL GEARS. 13 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.