The Winch,drum,hand Operated, cataloged under National Stock Number 3950-00-351-2570, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. The manufacturer of record is Arcosa Marine Components, Llc. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3950-00-351-2570 |
| Primary Part Number | BM6B |
| Item Name | Winch,drum,hand Operated |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Manufacturer | Arcosa Marine Components, Llc |
| Status | ACTIVE |
| Load Rating | 2000.0 POUNDS MAXIMUM LBS |
| Drum Flange Diameter and Location | 6.500 INCHES NOMINAL FIRST DRUM IN |
| Drum Surface Design | PLAIN |
| Mechanical Advantage Method | CRANK |
| Gear Mechanical Advantage | TRIPLE |
| Unable to Decode | UNABLE TO DECODE |
| Operation Method | HAND |
| Drum Diameter and Location | 2.500 INCHES NOMINAL FIRST DRUM IN |
| 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 |
|---|---|
| BM6B PRIMARY | Arcosa Marine Components, Llc (USA) |
| Reference | Meaning |
|---|---|
| B6B | 5/9 Secondary reference R H P Bearings Inc |
| BM6B | 5/9 Secondary reference Ingersoll-Rand Co Material Handling Div |
NSN 3950-00-351-2570 is a Winch,drum,hand Operated, manufactured by Arcosa Marine Components, Llc, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
NSN 3950-00-351-2570 has 1 manufacturer part number on file: BM6B (Arcosa Marine Components, Llc).
1 possible match (shared part number, not a government interchangeability claim): 3120-00-374-0803. Verify interchangeability with system specifications before substitution.
Key specifications for BM6B: Load Rating: 2000.0 POUNDS MAXIMUM LBS; Drum Flange Diameter and Location: 6.500 INCHES NOMINAL FIRST DRUM IN; Drum Surface Design: PLAIN; Mechanical Advantage Method: CRANK. 8 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.