The Gear Cluster, cataloged under National Stock Number 3020-00-397-7315, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-397-7315 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Hardness Rating | 27.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 1.205 INCHES IN |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Hub Nominal Length | 0.1680 INCHES BETWEEN SECOND AND THIRD GEAR IN |
| Hub Nominal Length | 0.173 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Hub Nominal Length | 0.8500 INCHES SECOND END IN |
| Nominal Outside Diameter | 0.208 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 0.8021 INCHES FIRST GEAR IN |
| Material | STEEL COMP 4130 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 |
|---|---|
| 446-58-0061 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-397-7315 is a Gear Cluster, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-397-7315: Design Type: SPUR SECOND GEAR; Design Type: SPUR FIRST GEAR; Hardness Rating: 27.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL; Nominal Overall Length: 1.205 INCHES IN. 12 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.