The Gear Cluster, cataloged under National Stock Number 3020-01-185-3883, 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16 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-185-3883 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.313 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.469 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.469 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Design Type | WORM FIRST GEAR |
| Design Type | WORM WHEEL SECOND GEAR |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Overall Length | 2.997 INCHES IN |
| Material Document and Classification | MIL-B-16444,GRADE A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Hub Style Designator | PLAIN BETWEEN FIRST AND SECOND GEAR |
| Hub Style Designator | PLAIN FIRST END |
| Hub Nominal Length | 0.562 INCHES FIRST END IN |
| Hub Nominal Length | 1.435 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Nominal Outside Diameter | 0.750 INCHES FIRST GEAR IN |
| Nominal Outside Diameter | 2.000 INCHES SECOND GEAR IN |
| Material | COPPER ALLOY OVERALL |
| Construction | SOLID |
| 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 |
|---|---|
| M-9484057 | D/9 Drawing number reference only General Electric Co Naval and Drive Turbine Systems Dept |
| 105F103AA PIECE 3 | 5/9 Secondary reference General Electric Co Naval and Drive Turbine Systems Dept |
| 3131527 | D/9 Drawing number reference only U.S. Government activity |
| 9484057P1 | 3/9 Design control — primary reference General Electric Co Naval and Drive Turbine Systems Dept |
NSN 3020-01-185-3883 is a Gear Cluster, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-185-3883: Bore Nominal Diameter: 0.313 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.469 INCHES FIRST END IN; Hub Nominal Diameter: 0.469 INCHES BETWEEN FIRST AND SECOND GEAR IN; Design Type: WORM FIRST GEAR. 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.