The Gear Cluster, cataloged under National Stock Number 3020-01-076-3464, 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 Hornet Acquisitionco, Llc Dba Onboard Systems. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-01-076-3464 |
| Primary Part Number | 42277-131 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Hornet Acquisitionco, Llc Dba Onboard Systems |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.437 INCHES BOTH ENDS0.437 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.719 INCHES BETWEEN FIRST AND SECOND GEAR0.719 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Counterbore Nominal Diameter | 0.440 INCHES FIRST END0.440 INCHES FIRST END IN |
| Design Type | SPUR ALL GEARSSPUR ALL GEARS |
| Bore Style | W/COUNTERBORE BOTH ENDSW/COUNTERBORE BOTH ENDS |
| Nominal Overall Length | 0.482 INCHES0.482 INCHES IN |
| Hub Style Designator | PLAIN BETWEEN FIRST AND SECOND GEARPLAIN BETWEEN FIRST AND SECOND GEAR |
| Hub Nominal Length | 0.062 INCHES BETWEEN FIRST AND SECOND GEAR0.062 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Nominal Outside Diameter | 0.875 INCHES SECOND GEAR0.875 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 1.812 INCHES FIRST GEAR1.812 INCHES FIRST GEAR IN |
| Material | PLASTIC PHENOLIC SHAFT/HUBPLASTIC PHENOLIC SHAFT/HUB |
| Material | STEEL FIRST GEARSTEEL FIRST GEAR |
| Material | STEEL SECOND GEARSTEEL SECOND GEAR |
| Counterbore Nominal Depth | 0.094 INCHES FIRST END0.094 INCHES FIRST END IN |
| Construction | ASSEMBLEDASSEMBLED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 42277-131 PRIMARY | Hornet Acquisitionco, Llc Dba Onboard Systems (USA) |
| Reference | Meaning |
|---|---|
| 42277D131 | 5/9 Secondary reference U.S. Government activity |
| 42277-131 | 3/9 Design control — primary reference Goodrich Corporation Dba Trw Lucas Aerospace |
NSN 3020-01-076-3464 is a Gear Cluster, manufactured by Hornet Acquisitionco, Llc Dba Onboard Systems, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-076-3464 has 1 manufacturer part number on file: 42277-131 (Hornet Acquisitionco, Llc Dba Onboard Systems).
Key specifications for 42277-131: Bore Nominal Diameter: 0.437 INCHES BOTH ENDS0.437 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.719 INCHES BETWEEN FIRST AND SECOND GEAR0.719 INCHES BETWEEN FIRST AND SECOND GEAR IN; Counterbore Nominal Diameter: 0.440 INCHES FIRST END0.440 INCHES FIRST END IN; Design Type: SPUR ALL GEARSSPUR ALL GEARS. 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 3020-01-076-3464 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.