The Drum,winch, cataloged under National Stock Number 3950-01-505-0874, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 6 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3950-01-505-0874 |
| Primary Part Number | 596-7409250-A1 |
| Item Name | Drum,winch |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Drum Surface Design | GROOVED |
| Drum Diameter | 26.785 INCHES NOMINAL IN |
| Next Higher Assembly Identification Designator | EXTERNAL STBD TRAY HANDLING WINCH CABLE DRUM ASSY |
| Next Higher Assembly Design Control Activity | 53711 |
| Drum Width | 34.312 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 596-7410365-5 | Naval Sea Systems Command (USA) |
| 596-7409250-A1 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| B4348211-A1 | 5/2 Secondary reference U.S. Government activity |
| 596-7410365 | D/9 Drawing number reference only Naval Sea Systems Command |
| B4348205-5 | 5/2 Secondary reference U.S. Government activity |
| 596-7409250 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3950-01-505-0874 is a Drum,winch, manufactured by Naval Sea Systems Command, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
NSN 3950-01-505-0874 has 2 manufacturer part numbers on file: 596-7410365-5 (Naval Sea Systems Command), 596-7409250-A1 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3950-01-506-5621. Verify interchangeability with system specifications before substitution.
Key specifications for 596-7409250-A1: Drum Surface Design: GROOVED; Drum Diameter: 26.785 INCHES NOMINAL IN; Next Higher Assembly Identification Designator: EXTERNAL STBD TRAY HANDLING WINCH CABLE DRUM ASSY; Next Higher Assembly Design Control Activity: 53711. 6 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.