The Gear Cluster, cataloged under National Stock Number 3020-00-678-0263, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-00-678-0263 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Hub Nominal Diameter | 0.250 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.185 INCHES SECOND END IN |
| Hub Nominal Diameter | 0.766 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Nominal Overall Length | 1.750 INCHES IN |
| Hub Style Designator | PLAIN FIRST END |
| Hub Style Designator | 1 STEP BETWEEN FIRST AND SECOND GEAR |
| Hub Style Designator | 1 STEP SECOND END |
| Hub Nominal Length | 0.375 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Hub Nominal Length | 0.625 INCHES SECOND END IN |
| Hub Nominal Length | 0.500 INCHES FIRST END IN |
| Nominal Outside Diameter | 0.542 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 1.5417 INCHES FIRST GEAR IN |
| Surface Treatment | PASSIVATE SHAFT/HUB |
| Material | STEEL CORROSION RESISTING SHAFT/HUB |
| Material | COPPER ALLOY SECOND GEAR |
| Material | COPPER ALLOY FIRST GEAR |
| 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 |
|---|---|
| 1877PC67 | 5/9 Secondary reference General Regulator Corp. Dba Accudriv |
| 1878-67 | 3/9 Design control — primary reference General Regulator Corp. Dba Accudriv |
| 81449-67 | 5/9 Secondary reference General Regulator Corp. Dba Accudriv |
| 877PC67 | 5/9 Secondary reference General Regulator Corp. Dba Accudriv |
NSN 3020-00-678-0263 is a Gear Cluster, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-678-0263: Hub Nominal Diameter: 0.250 INCHES FIRST END IN; Hub Nominal Diameter: 0.185 INCHES SECOND END IN; Hub Nominal Diameter: 0.766 INCHES BETWEEN FIRST AND SECOND GEAR IN; Design Type: SPUR SECOND GEAR. 19 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.