The Winch,drum,hand Operated, cataloged under National Stock Number 3950-01-346-2724, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. The manufacturer of record is Mcelroy Marine Machinery. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3950-01-346-2724 |
| Primary Part Number | B-3680-90 |
| Item Name | Winch,drum,hand Operated |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Manufacturer | Mcelroy Marine Machinery |
| Status | ACTIVE |
| Capstan Spool Style | SINGLE HEAD |
| Capstan Spool Quantity | 1 |
| Drum Surface Design | PLAIN |
| Braking Method | MANUAL |
| Mechanical Advantage Method | CRANK |
| Capstan Spool Mounting Position | HORIZONTAL |
| Operation Method | HAND |
| 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 |
|---|---|
| B-3680-90 PRIMARY | Mcelroy Marine Machinery (USA) |
| Reference | Meaning |
|---|---|
| B-3680-90 SERIES 8.5 | 5/9 Secondary reference Mcelroy Marine Machinery |
NSN 3950-01-346-2724 is a Winch,drum,hand Operated, manufactured by Mcelroy Marine Machinery, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
NSN 3950-01-346-2724 has 1 manufacturer part number on file: B-3680-90 (Mcelroy Marine Machinery).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-346-2783. Verify interchangeability with system specifications before substitution.
Key specifications for B-3680-90: Capstan Spool Style: SINGLE HEAD; Capstan Spool Quantity: 1; Drum Surface Design: PLAIN; Braking Method: MANUAL. 7 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.