The Gear Cluster, cataloged under National Stock Number 3020-00-326-4026, 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 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-326-4026 |
| Primary Part Number | 86890-01 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Ge Aviation Systems Llc |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.095 INCHES BOTH ENDS IN |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Bore Style | PLAIN BOTH ENDS |
| Precision Classification | QUALITY NUMBER 8 FIRST GEAR |
| Hardness Rating | 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 0.154 INCHES IN |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE SECOND GEAR |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE SHAFT/HUB |
| Material Document and Classification | MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE FIRST GEAR |
| Nominal Outside Diameter | 0.2300 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 0.9105 INCHES FIRST GEAR IN |
| Material | STEEL FIRST GEAR |
| Material | STEEL COMP 4140 SECOND GEAR |
| Material | STEEL COMP 4140 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 |
|---|---|
| 86890-01 | Ge Aviation Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 86890-01 | C/1 Advisory reference — outside the item-of-supply concept Safran Power Usa Llc |
| 86890-01 | 3/9 Design control — primary reference Lucas Aerospace Power Equipment Corporation |
NSN 3020-00-326-4026 is a Gear Cluster, manufactured by Ge Aviation Systems Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-326-4026 has 1 manufacturer part number on file: 86890-01 (Ge Aviation Systems Llc).
Key specifications for 86890-01: Bore Nominal Diameter: 0.095 INCHES BOTH ENDS IN; Design Type: SPUR SECOND GEAR; Design Type: SPUR FIRST GEAR; Bore Style: PLAIN BOTH ENDS. 16 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.