The Guard,mechanical Drive, cataloged under National Stock Number 3020-01-421-4484, 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 Par Marine Services Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-421-4484 |
| Primary Part Number | 50271003-1 |
| Item Name | Guard,mechanical Drive |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Par Marine Services Llc |
| 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 |
|---|---|
| 50271003-1 PRIMARY | Par Marine Services Llc (USA) |
| Reference | Meaning |
|---|---|
| 50271003-1 | 3/9 Design control — primary reference Gulf Coast Holdings, Inc Dba Unidynamics |
| 50271003-1 | 5/9 Secondary reference U.S. Government activity |
| 50271000 ITEM 26 | 5/9 Secondary reference Gulf Coast Holdings, Inc Dba Unidynamics |
| PL50271000 ITEM 26 | 5/9 Secondary reference Gulf Coast Holdings, Inc Dba Unidynamics |
| 50271003-1 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 50271000 ITEM 26 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| PL50271000 ITEM 26 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| PL50271000 ITEM 26 | 5/9 Secondary reference U.S. Government activity |
| 50271000 ITEM 26 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-01-421-4484 is a Guard,mechanical Drive, manufactured by Par Marine Services Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-421-4484 has 1 manufacturer part number on file: 50271003-1 (Par Marine Services Llc).
Key specifications for 50271003-1: End Item Identification: CRANE DEFENSE SYSTEMS WINCH ASSEMBLY. 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.