The Winch,drum,hand Operated, cataloged under National Stock Number 3950-01-309-9921, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3950-01-309-9921 |
| Primary Part Number | 3644T68 |
| Item Name | Winch,drum,hand Operated |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Load Rating | 1800.0 POUNDS MAXIMUM LBS |
| Drum Surface Design | GROOVED |
| Braking Method | MANUAL |
| Mechanical Advantage Method | SPUR GEAR |
| Gear Mechanical Advantage | SINGLE |
| Drum Diameter and Location | 0.281 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 |
|---|---|
| 3644T68 PRIMARY | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| 3644T37 | 5/9 Secondary reference Mcmaster-Carr Supply Co |
| 3644T17 | 5/9 Secondary reference Mcmaster-Carr Supply Co |
NSN 3950-01-309-9921 is a Winch,drum,hand Operated, manufactured by Mcmaster-Carr Supply Co, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
NSN 3950-01-309-9921 has 1 manufacturer part number on file: 3644T68 (Mcmaster-Carr Supply Co).
Key specifications for 3644T68: Load Rating: 1800.0 POUNDS MAXIMUM LBS; Drum Surface Design: GROOVED; Braking Method: MANUAL; Mechanical Advantage Method: SPUR GEAR. 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.