The Impeller,fan,centrifugal, cataloged under National Stock Number 4140-01-421-6945, 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 Abb Motors & Mechanical Inc Div Abb Motors and Mechanical Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-421-6945 |
| Primary Part Number | 075440007R |
| Item Name | Impeller,fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Abb Motors & Mechanical Inc Div Abb Motors and Mechanical Inc. |
| Status | ACTIVE |
| Blade Quantity | 9 |
| 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 |
|---|---|
| 075440007R PRIMARY | Abb Motors & Mechanical Inc Div Abb Motors and Mechanical Inc. (USA) |
| Reference | Meaning |
|---|---|
| 801629-565 PIECE 55 | 5/9 Secondary reference Reliance Electric |
| 75440-7-A | 5/9 Secondary reference Reliance Electric |
NSN 4140-01-421-6945 is a Impeller,fan,centrifugal, manufactured by Abb Motors & Mechanical Inc Div Abb Motors and Mechanical Inc., classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-421-6945 has 1 manufacturer part number on file: 075440007R (Abb Motors & Mechanical Inc Div Abb Motors and Mechanical Inc.).
Key specifications for 075440007R: Blade Quantity: 9; End Item Identification: 10HP,256TNC FRAME AC MOTOR. 1 specification is 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.