The Winch,drum,hand Operated, cataloged under National Stock Number 3950-01-422-7433, 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. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3950-01-422-7433 |
| Primary Part Number | M4311PB |
| Item Name | Winch,drum,hand Operated |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Manufacturer | Thern Inc |
| Status | ACTIVE |
| Load Rating | 2000.0 POUNDS MAXIMUM LBS |
| Drum Flange Diameter and Location | 6.250 INCHES NOMINAL FIRST DRUM IN |
| Drum Surface Design | PLAIN |
| Braking Method | MANUAL |
| Gear Mechanical Advantage | SINGLE |
| Unable to Decode | UNABLE TO DECODE |
| Furnished Items and Quantity | 1 AUTOMATIC SAFETY BRAKE AND 1 MOUNTING BASE |
| 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 |
|---|---|
| M4311PB PRIMARY | Thern Inc (USA) |
| Reference | Meaning |
|---|---|
| SD1958 | 5/1 Secondary reference Thern Inc |
NSN 3950-01-422-7433 is a Winch,drum,hand Operated, manufactured by Thern Inc, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
NSN 3950-01-422-7433 has 1 manufacturer part number on file: M4311PB (Thern Inc).
Key specifications for M4311PB: Load Rating: 2000.0 POUNDS MAXIMUM LBS; Drum Flange Diameter and Location: 6.250 INCHES NOMINAL FIRST DRUM IN; Drum Surface Design: PLAIN; Braking Method: MANUAL. 9 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.