The Sprocket Wheel, cataloged under National Stock Number 3020-00-089-2378, 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 26 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-00-089-2378 |
| Primary Part Number | 4067-40 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Hornet Acquisitionco, Llc Dba Onboard Systems |
| Status | ACTIVE |
| Hub Outside Diameter | 0.440 INCHES NOMINAL AA END IN |
| Securing Method | DRILLED HOLE |
| Bore Length | 0.471 INCHES MINIMUM AND 0.471 INCHES MINIMUM AND 0.474 INCHES MAXIMUM0.474 INCHES MAXIMUM IN |
| Design Form | PLAIN |
| Teeth Hardness Rating | 28.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM |
| Tooth Pitch | 0.250 INCHES NOMINAL IN |
| Asa Standard Chain Number | 25 |
| Outside Diameter | 0.857 INCHES NOMINAL0.857 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Metallic Hardness Rating and Location | 28.0 ROCKWELL C MINIMUM BODY AND 33.0 ROCKWELL C MAXIMUM BODY |
| Material Document and Classification | MIL-S-6758, COND F4 MIL SPEC SINGLE MATERIAL RESPONSE |
| Pitch Diameter | 0.751 INCHES NOMINAL0.751 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 9 |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | ROCKWELL |
| Distance From Hub End to Flange End | 0.367 INCHES MINIMUM AND 0.368 INCHES MAXIMUM AA END IN |
| Securing Hole Quantity | 11 |
| Drilled Hole Diameter | 0.078 INCHES NOMINAL0.078 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM |
| Hole Location | LOCATION ON HUB PORTION OF GEAR BETWEEN HUB END AND FACE |
| Bore Diameter | 0.315 INCHES MINIMUM AND 0.315 INCHES MINIMUM AND 0.316 INCHES MAXIMUM0.316 INCHES MAXIMUM IN |
| Material | STEEL COMP 4130 |
| Face Width | 0.103 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN |
| Securing Location | AA END |
| 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 |
|---|---|
| 4067-40 PRIMARY | Hornet Acquisitionco, Llc Dba Onboard Systems (USA) |
| Reference | Meaning |
|---|---|
| 4067-40 | 5/9 Secondary reference Goodrich Corporation Dba Trw Lucas Aerospace |
| 4067C40 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-089-2378 is a Sprocket Wheel, manufactured by Hornet Acquisitionco, Llc Dba Onboard Systems, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-089-2378 has 1 manufacturer part number on file: 4067-40 (Hornet Acquisitionco, Llc Dba Onboard Systems).
Key specifications for 4067-40: Hub Outside Diameter: 0.440 INCHES NOMINAL AA END IN; Securing Method: DRILLED HOLE; Bore Length: 0.471 INCHES MINIMUM AND 0.471 INCHES MINIMUM AND 0.474 INCHES MAXIMUM0.474 INCHES MAXIMUM IN; Design Form: PLAIN. 26 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.