The Sprocket Wheel, cataloged under National Stock Number 3020-01-450-9141, 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 The Entwistle Company Llc. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-450-9141 |
| Primary Part Number | 9310A4540-001 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | The Entwistle Company Llc |
| Status | ACTIVE |
| Securing Method | THREADED HOLE(S) |
| Bore Length | 1.660 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Outside Diameter | 3.320 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Pitch Diameter | 3.010 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 2 |
| Teeth Quantity Per Row | 15 |
| Protruding Hub Characteristic | STEPPED |
| Securing Hole Quantity | 2 |
| Thread Size | 5/16-18 |
| Hole Location | ON HUB BETWEEN SPROCKETS |
| Bore Diameter | 1.000 INCHES NOMINAL IN |
| Material | STEEL |
| Furnished Items | KEYING FACILITY |
| Face Width | 0.340 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 |
|---|---|
| 9310A4540-001 | The Entwistle Company Llc (USA) |
| Reference | Meaning |
|---|---|
| DS50A15 | 3/9 Design control — primary reference Martin Sprocket and Gear Inc |
NSN 3020-01-450-9141 is a Sprocket Wheel, manufactured by The Entwistle Company Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-450-9141 has 1 manufacturer part number on file: 9310A4540-001 (The Entwistle Company Llc).
Key specifications for 9310A4540-001: Securing Method: THREADED HOLE(S); Bore Length: 1.660 INCHES NOMINAL IN; Design Form: PLAIN; Outside Diameter: 3.320 INCHES NOMINAL IN. 18 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.