The Impeller,fan,centrifugal, cataloged under National Stock Number 4140-01-159-2638, 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 Smith and Smith Aircraft Co. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Impeller,fan,centrifugal |
| FSC / FSG | 4140 — Fans, Air Circulators, and Blower Equipment (FSG 41) |
| Manufacturers | Smith and Smith Aircraft Co (CAGE 28298) |
| Parameter | Value |
|---|---|
| NSN | 4140-01-159-2638 |
| Primary Part Number | 340-35-00001 |
| Item Name | Impeller,fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Smith and Smith Aircraft 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 |
|---|---|
| 340-35-00001 PRIMARY | Smith and Smith Aircraft Co (USA) |
| Reference | Meaning |
|---|---|
| 10392421 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 4140-01-159-2638 is a Impeller,fan,centrifugal, manufactured by Smith and Smith Aircraft Co, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-159-2638 has 1 manufacturer part number on file: 340-35-00001 (Smith and Smith Aircraft Co).
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.