The Gear Cluster, cataloged under National Stock Number 3020-00-941-6006, 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19 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-941-6006 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.187 INCHES SECOND END IN |
| Hub Nominal Diameter | 0.250 INCHES SECOND END IN |
| Hub Nominal Diameter | 0.812 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Counterbore Nominal Diameter | 0.5625 INCHES FIRST END IN |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Bore Style | W/COUNTERBORE SECOND END |
| Precision Classification | QUALITY NUMBER 10 OR QUALITY NUMBER 11 ALL GEARS |
| Nominal Overall Length | 0.800 INCHES IN |
| Material Document and Classification | QQ-B-728 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Hub Style Designator | PLAIN 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 | 0.175 INCHES SECOND END IN |
| Nominal Outside Diameter | 1.040 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 3.040 INCHES FIRST GEAR IN |
| Material | COPPER ALLOY 670 OR COPPER ALLOY 675 OVERALL |
| Counterbore Nominal Depth | 0.500 INCHES FIRST END IN |
| 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 |
|---|---|
| 30297 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-941-6006 is a Gear Cluster, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 4930-00-944-2995, 5995-01-448-0390, 5360-01-539-9785. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-00-941-6006: Bore Nominal Diameter: 0.187 INCHES SECOND END IN; Hub Nominal Diameter: 0.250 INCHES SECOND END IN; Hub Nominal Diameter: 0.812 INCHES BETWEEN FIRST AND SECOND GEAR IN; Counterbore Nominal Diameter: 0.5625 INCHES FIRST END 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.