The Impeller,fan,centrifugal, cataloged under National Stock Number 4140-00-448-3228, 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 7 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-00-448-3228 |
| Item Name | Impeller,fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Status | ACTIVE |
| Style Designator | CURVED BLADES DOUBLE WIDTH |
| Attachment Method | SETSCREW |
| Diameter | 4.200 INCHES MINIMUM AND 4.270 INCHES MAXIMUM IN |
| Blade Quantity | 48 |
| Width | 5.760 INCHES MINIMUM AND 5.880 INCHES MAXIMUM IN |
| Test Data Document | 97403-13216E5909 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| Material | ALUMINUM BLADE |
| 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 |
|---|---|
| A22678 | 5/9 Secondary reference U.S. Government activity |
| C431-575D-.62 | 5/9 Secondary reference Humidaire Co., Inc. |
| A22678 | 5/9 Secondary reference Humidaire Co., Inc. |
| 13216E5909 | 1/2 Source control — Government-approved source U.S. Government activity |
| A22678 | 5/9 Secondary reference Regal-Beloit Corporation Dba Fasco Group Div Cassville Division |
| Q425-2930-.625(BORE) | 3/2 Design control — primary reference U.S. Government activity |
NSN 4140-00-448-3228 is a Impeller,fan,centrifugal, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3110-00-679-1256. Verify interchangeability with system specifications before substitution.
Key specifications for 4140-00-448-3228: Style Designator: CURVED BLADES DOUBLE WIDTH; Attachment Method: SETSCREW; Diameter: 4.200 INCHES MINIMUM AND 4.270 INCHES MAXIMUM IN; Blade Quantity: 48. 7 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.