The Tensioner Pulley Assembly, cataloged under National Stock Number 3950-01-478-4166, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. The manufacturer of record is Allied Systems Company Dba Allied Systems Co. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 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 | 3950-01-478-4166 |
| Primary Part Number | 40579 |
| Item Name | Tensioner Pulley Assembly |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Manufacturer | Allied Systems Company Dba Allied Systems Co |
| Status | ACTIVE |
| 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 |
|---|---|
| 40579 PRIMARY | Allied Systems Company Dba Allied Systems Co (USA) |
NSN 3950-01-478-4166 is a Tensioner Pulley Assembly, manufactured by Allied Systems Company Dba Allied Systems Co, classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
NSN 3950-01-478-4166 has 1 manufacturer part number on file: 40579 (Allied Systems Company Dba Allied Systems Co).
2 possible matches (shared part number, not a government interchangeability claim): 5895-01-604-9878, 6240-01-658-5217. Verify interchangeability with system specifications before substitution.
Key specifications for 40579: End Item Identification: WINCH ASSEMBLY (MODEL: D6000FCT). 0 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.