The Gear Cluster, cataloged under National Stock Number 3020-00-347-4549, 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19 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-347-4549 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.406 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 2.000 INCHES SECOND END IN |
| Hub Nominal Diameter | 1.745 INCHES FIRST END IN |
| Hub Nominal Diameter | 1.763 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Design Type | SPUR FIRST GEAR |
| Design Type | HELICAL SECOND GEAR |
| Bore Style | PLAIN BOTH ENDS |
| Hardness Rating | 59.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 0.932 INCHES IN |
| Material Document and Classification | FED STD 66,AISI/SAE 8620H ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Hub Style Designator | PLAIN BETWEEN FIRST AND SECOND GEAR |
| Hub Style Designator | PLAIN BOTH ENDS |
| Hub Nominal Length | 0.062 INCHES FIRST END IN |
| Hub Nominal Length | 0.015 INCHES SECOND END IN |
| Hub Nominal Length | 0.104 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Nominal Outside Diameter | 1.968 INCHES FIRST GEAR IN |
| Nominal Outside Diameter | 2.734 INCHES SECOND GEAR IN |
| Material | STEEL COMP 8620H 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 |
|---|---|
| 2-P-127 | 3/9 Design control — primary reference Dana Corp Drivetrain Service Div |
| 914874 | 5/9 Secondary reference Sasco Inc Canadian Div |
| 7538672 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
| 2P127 | 5/9 Secondary reference U.S. Government activity |
| 2387T2 | 5/9 Secondary reference Diamond Reo Truck Co |
NSN 3020-00-347-4549 is a Gear Cluster, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-347-4549: Bore Nominal Diameter: 1.406 INCHES BOTH ENDS IN; Hub Nominal Diameter: 2.000 INCHES SECOND END IN; Hub Nominal Diameter: 1.745 INCHES FIRST END IN; Hub Nominal Diameter: 1.763 INCHES BETWEEN FIRST AND SECOND GEAR IN. 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.