The Fan,centrifugal, cataloged under National Stock Number 4140-01-232-3220, 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 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4140-01-232-3220 |
| Item Name | Fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Status | ACTIVE |
| Outlet Location | TOP |
| Length | 8.250 INCHES NOMINAL IN |
| Style Designator | FIXED, RECTANGULAR OUTLETS |
| Discharge Direction | VERTICAL UP |
| Outlet Inside Width | 2.750 INCHES NOMINAL IN |
| Height | 11.000 INCHES NOMINAL IN |
| Width | 7.930 INCHES NOMINAL IN |
| Prime Mover Type | ELECTRIC MOTOR |
| 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 |
|---|---|
| 612640-03 | 1/2 Source control — Government-approved source U.S. Government activity |
| 26257 | 3/9 Design control — primary reference Paxton Products Inc |
NSN 4140-01-232-3220 is a Fan,centrifugal, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3110-01-345-0919, 5330-01-577-6343. Verify interchangeability with system specifications before substitution.
Key specifications for 4140-01-232-3220: Outlet Location: TOP; Length: 8.250 INCHES NOMINAL IN; Style Designator: FIXED, RECTANGULAR OUTLETS; Discharge Direction: VERTICAL UP. 8 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.