The Housing,centrifugal Fan, cataloged under National Stock Number 4140-01-364-2913, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4140-01-364-2913 |
| Item Name | Housing,centrifugal Fan |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Status | ACTIVE |
| Length | 4.343 INCHES NOMINAL IN |
| Outlet Inside Diameter | 4.500 INCHES NOMINAL IN |
| Prime Mover for Which Designed | ELECTRIC MOTOR |
| Material | ALUMINUM ALLOY HOUSING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 742700-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4140-01-364-2913 is a Housing,centrifugal Fan, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5365-01-649-4771, 6515-01-695-4226. Verify interchangeability with system specifications before substitution.
Key specifications for 4140-01-364-2913: Length: 4.343 INCHES NOMINAL IN; Outlet Inside Diameter: 4.500 INCHES NOMINAL IN; Prime Mover for Which Designed: ELECTRIC MOTOR; End Item Identification: ENVIRONMENTAL CONTROL SYSTEM FOR B-2 BOMBER. 4 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.