The Hoist,chain, cataloged under National Stock Number 3950-01-006-4489, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. The manufacturer of record is Yale Industrial Products, Inc. Div Duff Norton Company. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3950-01-006-4489 |
| Primary Part Number | CM 640 PULLER |
| Item Name | Hoist,chain |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Manufacturer | Yale Industrial Products, Inc. Div Duff Norton Company |
| Status | ACTIVE |
| Chain Material Diameter | 0.781 INCHES NOMINAL IN |
| Raised Position Distance Between Suspension Hook and Load Hook Bearing Surface | 18.375 INCHES NOMINAL IN |
| Load Rating | 6000.0 POUNDS MAXIMUM LBS |
| Mounting Method | HOOK SUSPENSION |
| Mounting Position | ANY ACCEPTABLE |
| Braking Method | MANUAL |
| Mechanical Advantage Method | LEVER |
| Hook Quantity | 2 |
| Load Element Quantity Per Hook | 2 |
| Chain Type | PROOF COIL |
| 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 |
|---|---|
| CM 640 PULLER PRIMARY | Yale Industrial Products, Inc. Div Duff Norton Company (USA) |
| Reference | Meaning |
|---|---|
| MA30-2 | 5/9 Secondary reference Yale Industrial Products, Inc. Div Duff Norton Company |
NSN 3950-01-006-4489 is a Hoist,chain, manufactured by Yale Industrial Products, Inc. Div Duff Norton Company, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
NSN 3950-01-006-4489 has 1 manufacturer part number on file: CM 640 PULLER (Yale Industrial Products, Inc. Div Duff Norton Company).
3 possible matches (shared part number, not a government interchangeability claim): 2590-01-239-7333, 5998-01-474-2481, 1240-01-654-6249. Verify interchangeability with system specifications before substitution.
Key specifications for CM 640 PULLER: Chain Material Diameter: 0.781 INCHES NOMINAL IN; Raised Position Distance Between Suspension Hook and Load Hook Bearing Surface: 18.375 INCHES NOMINAL IN; Load Rating: 6000.0 POUNDS MAXIMUM LBS; Mounting Method: HOOK SUSPENSION. 11 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.