The Fan,ventilating, cataloged under National Stock Number 4140-01-579-1286, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Hewlett-Packard Company Dba HP. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4140-01-579-1286 |
| Primary Part Number | 412140-B21 |
| Item Name | Fan,ventilating |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Hewlett-Packard Company Dba HP |
| 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 |
|---|---|
| 412140-B21 PRIMARY | Hewlett-Packard Company Dba HP (USA) |
| 507082-B21 | Hewlett-Packard Company Dba HP (USA) |
| 507521-001 | Hewlett-Packard Company Dba HP (USA) |
| Reference | Meaning |
|---|---|
| 413996-001 | 5/9 Secondary reference Hewlett Packard Co |
NSN 4140-01-579-1286 is a Fan,ventilating, manufactured by Hewlett-Packard Company Dba HP, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-579-1286 has 3 manufacturer part numbers on file: 412140-B21 (Hewlett-Packard Company Dba HP), 507082-B21 (Hewlett-Packard Company Dba HP), 507521-001 (Hewlett-Packard Company Dba HP).
2 possible matches (shared part number, not a government interchangeability claim): 5999-01-613-1438, 7010-01-625-7345. Verify interchangeability with system specifications before substitution.
Key specifications for 412140-B21: Part Name Assigned by Controlling Agency: BLC7000ENCLOSURE HP SINGLE ACTIVE COOL FAN; End Item Identification: ITALIAN ARMY. 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.