The Sprocket Wheel, cataloged under National Stock Number 3020-01-440-8989, 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 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-440-8989 |
| Primary Part Number | EJ22011 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | The Entwistle Company Llc |
| Status | ACTIVE |
| Hub Outside Diameter | 2.688 INCHES NOMINAL AA END IN |
| Bore Length | 1.000 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Tooth Pitch | 0.625 INCHES NOMINAL IN |
| Outside Diameter | 3.720 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | PLAIN |
| Pitch Diameter | 3.401 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 17 |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | NOT RATED |
| Distance From Center of Bore to Bottom of Keyway | 0.626 INCHES NOMINAL IN |
| Distance From Hub End to Flange End | 0.656 INCHES NOMINAL AA END IN |
| Keyway Width | 0.250 INCHES NOMINAL IN |
| Bore Diameter | 1.002 INCHES NOMINAL IN |
| Material | STEEL |
| Furnished Items | KEYING FACILITY |
| Face Width | 0.343 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 |
|---|---|
| EJ22011 PRIMARY | The Entwistle Company Llc (USA) |
| EJ41250 ITEM 22 | The Entwistle Company Llc (USA) |
| Reference | Meaning |
|---|---|
| EJ41250 | D/9 Drawing number reference only The Entwistle Company Llc |
NSN 3020-01-440-8989 is a Sprocket Wheel, manufactured by The Entwistle Company Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-440-8989 has 2 manufacturer part numbers on file: EJ22011 (The Entwistle Company Llc), EJ41250 ITEM 22 (The Entwistle Company Llc).
Key specifications for EJ22011: Hub Outside Diameter: 2.688 INCHES NOMINAL AA END IN; Bore Length: 1.000 INCHES NOMINAL IN; Design Form: PLAIN; Tooth Pitch: 0.625 INCHES NOMINAL IN. 21 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.