The Gear Cluster, cataloged under National Stock Number 3020-00-138-0545, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-138-0545 |
| 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 |
| Precision Classification | QUALITY NUMBER 10 OR QUALITY NUMBER 11 FIRST GEAR |
| Nominal Overall Length | 0.970 INCHES IN |
| Material Document and Classification | MIL-S-7720,COMP 303S MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Hub Style Designator | 1 STEP BOTH ENDS |
| Hub Nominal Length | 0.026 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Hub Nominal Length | 0.1150 INCHES BETWEEN SECOND AND THIRD GEAR IN |
| Hub Nominal Length | 0.1360 INCHES SECOND END IN |
| Hub Nominal Length | 0.5280 INCHES FIRST END IN |
| Nominal Outside Diameter | 0.290 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 0.721 INCHES FIRST GEAR IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 303 OVERALL |
| Construction | SOLID |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 738650-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-138-0545 is a Gear Cluster, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-138-0545: Design Type: SPUR SECOND GEAR; Design Type: SPUR FIRST GEAR; Precision Classification: QUALITY NUMBER 10 OR QUALITY NUMBER 11 FIRST GEAR; Nominal Overall Length: 0.970 INCHES IN. 15 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.
NSN 3020-00-138-0545 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.