The Pulley,groove, cataloged under National Stock Number 3020-01-522-1757, 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 Allied Systems Company Dba Allied Systems Co. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-01-522-1757 |
| Primary Part Number | 245751 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Allied Systems Company Dba Allied Systems Co |
| Status | ACTIVE |
| Outside Diameter | 2.250 INCHES NOMINAL IN |
| Style Designator | WEBBED OR SPOKED |
| 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 |
|---|---|
| 245751 PRIMARY | Allied Systems Company Dba Allied Systems Co (USA) |
| Reference | Meaning |
|---|---|
| 20-25A-680784032-API | 5/9 Secondary reference U.S. Government activity |
| 20-25A-1 (680784032) | 5/9 Secondary reference U.S. Government activity |
NSN 3020-01-522-1757 is a Pulley,groove, manufactured by Allied Systems Company Dba Allied Systems Co, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-522-1757 has 1 manufacturer part number on file: 245751 (Allied Systems Company Dba Allied Systems Co).
Key specifications for 245751: Outside Diameter: 2.250 INCHES NOMINAL IN; Style Designator: WEBBED OR SPOKED; Overall Length: 20.000 INCHES NOMINAL IN; Special Features: GROOVED FOR 1 INCH WIRE ROPE, WITH SEALED ROLLER BEARINGS AND INNER RACE, MATT: BRONZE, SHAFT SIZE 2.999 INCH. DESIGNED FOR 40,000 LBS RATED LOAD ( 20,000 LBS LINE LOAD ) LBS. 2 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.