The Pulley,special, cataloged under National Stock Number 3020-01-362-9613, 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 Engineered Systems Co. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-362-9613 |
| Primary Part Number | 52-D-641-1 |
| Item Name | Pulley,special |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Engineered Systems Co |
| Status | ACTIVE |
| 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 |
|---|---|
| 52-D-641-1 PRIMARY | Engineered Systems Co (USA) |
| 52-D-641-1 | Marshall of Cambridge Aerospace Limited (GBR) |
NSN 3020-01-362-9613 is a Pulley,special, manufactured by Engineered Systems Co, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-362-9613 has 2 manufacturer part numbers on file: 52-D-641-1 (Engineered Systems Co), 52-D-641-1 (Marshall of Cambridge Aerospace Limited).
Key specifications for 52-D-641-1: Special Features: USED ON PORTABLE ACFT ARRESTING GEAR. 0 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.