The Winch,drum,power Operated, cataloged under National Stock Number 3950-01-491-8650, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. The manufacturer of record is Thern Inc. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3950-01-491-8650 |
| Primary Part Number | SD3256 4WS6M-S5 |
| Item Name | Winch,drum,power Operated |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Manufacturer | Thern Inc |
| 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 |
|---|---|
| SD3256 4WS6M-S5 PRIMARY | Thern Inc (USA) |
| 580-6641123-ECHG-A103 | Naval Sea Systems Command (USA) |
| 580-6641123-502 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| C692-1603-ECHG-A103 | 5/2 Secondary reference U.S. Government activity |
NSN 3950-01-491-8650 is a Winch,drum,power Operated, manufactured by Thern Inc, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
NSN 3950-01-491-8650 has 3 manufacturer part numbers on file: SD3256 4WS6M-S5 (Thern Inc), 580-6641123-ECHG-A103 (Naval Sea Systems Command), 580-6641123-502 (Naval Sea Systems Command).
Key specifications for SD3256 4WS6M-S5: Part Name Assigned by Controlling Agency: DRAWING)EXTERNAL COUNTERMEASURE LAUNCHER HANDLING GEAR;(INAVY)WINCH ASSEMBLY,ELECTRIC; End Item Identification: HANDLING GEAR ECL 580-6641123-ECHG ASSY A. 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.