The Sprocket Wheel, cataloged under National Stock Number 3020-00-571-3683, 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 24 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-00-571-3683 |
| Primary Part Number | 4067-124 |
| 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 | 0.750 INCHES NOMINAL BOTH ENDS IN |
| Securing Method | DRILLED HOLE |
| Bore Length | 0.807 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN |
| Design Form | PLAIN |
| Tooth Pitch | 0.250 INCHES NOMINAL IN |
| Outside Diameter | 2.529 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Metallic Hardness Rating and Location | 26.0 ROCKWELL C MINIMUM BODY AND 33.0 ROCKWELL C MAXIMUM BODY |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE |
| Pitch Diameter | 2.392 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 30 |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | ROCKWELL |
| Distance From Hub End to Flange End | 0.347 INCHES NOMINAL BB END IN |
| Distance From Hub End to Flange End | 0.355 INCHES NOMINAL AA END IN |
| Securing Hole Quantity | 1 |
| Drilled Hole Diameter | 0.093 INCHES NOMINAL IN |
| Hole Location | ON BB HUB OD |
| Bore Diameter | 0.4726 INCHES MINIMUM AND 0.4731 INCHES MAXIMUM IN |
| Material | STEEL COMP 4130 |
| Face Width | 0.103 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN |
| Securing Location | BB END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4067-124 PRIMARY | Hornet Acquisitionco, Llc Dba Onboard Systems (USA) |
| Reference | Meaning |
|---|---|
| 4067-124 | 3/9 Design control — primary reference Goodrich Corporation Dba Trw Lucas Aerospace |
| 4067C124 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-571-3683 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 3020-00-571-3683 has 1 manufacturer part number on file: 4067-124 (Hornet Acquisitionco, Llc Dba Onboard Systems).
Key specifications for 4067-124: Hub Outside Diameter: 0.750 INCHES NOMINAL BOTH ENDS IN; Securing Method: DRILLED HOLE; Bore Length: 0.807 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN; Design Form: PLAIN. 24 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 3020-00-571-3683 has DEMIL Code Q. 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.