The Gear Cluster, cataloged under National Stock Number 3020-00-504-7525, 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 Honeywell Intl Inc Defense Avionics Systems. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-504-7525 |
| Primary Part Number | 2273621-0001 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Honeywell Intl Inc Defense Avionics Systems |
| Status | ACTIVE |
| Hub Nominal Diameter | 0.092 INCHES BOTH ENDS IN |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Nominal Overall Length | 1.305 INCHES IN |
| Hub Style Designator | 1 STEP BOTH ENDS |
| Hub Nominal Length | 0.100 INCHES SECOND END IN |
| Hub Nominal Length | 0.996 INCHES FIRST END IN |
| Nominal Outside Diameter | 0.2500 INCHES FIRST GEAR IN |
| Nominal Outside Diameter | 0.5160 INCHES SECOND GEAR IN |
| Material | STEEL SHAFT/HUB |
| Material | COPPER ALLOY SECOND GEAR |
| Material | STEEL FIRST GEAR |
| 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 |
|---|---|
| 2273621-0001 PRIMARY | Honeywell Intl Inc Defense Avionics Systems (USA) |
| Reference | Meaning |
|---|---|
| 2273621 | D/9 Drawing number reference only Honeywell Intl Inc Defense Avionics Systems |
NSN 3020-00-504-7525 is a Gear Cluster, manufactured by Honeywell Intl Inc Defense Avionics Systems, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-504-7525 has 1 manufacturer part number on file: 2273621-0001 (Honeywell Intl Inc Defense Avionics Systems).
Key specifications for 2273621-0001: Hub Nominal Diameter: 0.092 INCHES BOTH ENDS IN; Design Type: SPUR SECOND GEAR; Design Type: SPUR FIRST GEAR; Nominal Overall Length: 1.305 INCHES IN. 13 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.