The Gear Cluster, cataloged under National Stock Number 3020-00-934-9677, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Ge Aviation Systems Llc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-934-9677 |
| Primary Part Number | 142566-01 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Ge Aviation Systems Llc |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.126 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.301 INCHES FIRST END IN |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Bore Style | PLAIN BOTH ENDS |
| Precision Classification | QUALITY NUMBER 10 OR QUALITY NUMBER 11 ALL GEARS |
| Nominal Overall Length | 0.395 INCHES IN |
| Material Document and Classification | MIL-S-7720,COND A MIL SPEC SINGLE MATERIAL RESPONSE FIRST GEAR |
| Material Document and Classification | QQ-B-679,COMP 3 FED SPEC SINGLE MATERIAL RESPONSE SECOND GEAR |
| Material Document and Classification | QQ-B-679,COMP 3 FED SPEC SINGLE MATERIAL RESPONSE SHAFT/HUB |
| Hub Style Designator | PLAIN FIRST END |
| Hub Nominal Length | 0.012 INCHES FIRST END IN |
| Nominal Outside Diameter | 0.360 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 0.860 INCHES FIRST GEAR IN |
| Surface Treatment | PASSIVATE FIRST GEAR |
| Material | STEEL COMP 303 FIRST GEAR |
| Material | COPPER ALLOY 606 SECOND GEAR |
| Material | COPPER ALLOY 606 SHAFT/HUB |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 142566-01 PRIMARY | Ge Aviation Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 142566 | D/9 Drawing number reference only Ge Aviation Systems Llc |
NSN 3020-00-934-9677 is a Gear Cluster, manufactured by Ge Aviation Systems Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-934-9677 has 1 manufacturer part number on file: 142566-01 (Ge Aviation Systems Llc).
Key specifications for 142566-01: Bore Nominal Diameter: 0.126 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.301 INCHES FIRST END IN; Design Type: SPUR SECOND GEAR; Design Type: SPUR FIRST 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.