The Sprocket Wheel, cataloged under National Stock Number 3020-01-409-1254, 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 Naval Sea Systems Command. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-409-1254 |
| Primary Part Number | 561-6404325-108 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Bore Length | 0.125 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Tooth Pitch | 0.500 INCHES NOMINAL IN |
| Outside Diameter | 8.910 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Pitch Diameter | 8.5944 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 54 |
| Hardness Rating Test Method | NOT RATED |
| Bore Diameter | 1.375 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Face Width | 0.125 INCHES NOMINAL IN |
| 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 |
|---|---|
| 561-6404325-108 PRIMARY | Naval Sea Systems Command (USA) |
| 211061001 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 8SP25-54 | 5/9 Secondary reference W. M. Berg, Inc. |
NSN 3020-01-409-1254 is a Sprocket Wheel, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-409-1254 has 2 manufacturer part numbers on file: 561-6404325-108 (Naval Sea Systems Command), 211061001 (Naval Sea Systems Command).
Key specifications for 561-6404325-108: Bore Length: 0.125 INCHES NOMINAL IN; Design Form: PLAIN; Tooth Pitch: 0.500 INCHES NOMINAL IN; Outside Diameter: 8.910 INCHES NOMINAL 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.