The Guard,fan Impeller, cataloged under National Stock Number 4140-01-331-2230, 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 Aero Products, Division of Northrop Grumman International Services 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | Guard,fan Impeller |
| FSC / FSG | 4140 — Fans, Air Circulators, and Blower Equipment (FSG 41) |
| Manufacturers | Aero Products, Division of Northrop Grumman International Services Co (CAGE U7069) |
| Parameter | Value |
|---|---|
| NSN | 4140-01-331-2230 |
| Primary Part Number | 7891436-001 |
| Item Name | Guard,fan Impeller |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Aero Products, Division of Northrop Grumman International Services Co |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 7891436-001 | Aero Products, Division of Northrop Grumman International Services Co (GBR) |
| Reference | Meaning |
|---|---|
| 7891436-001 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4140-01-331-2230 is a Guard,fan Impeller, manufactured by Aero Products, Division of Northrop Grumman International Services Co, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-331-2230 has 1 manufacturer part number on file: 7891436-001 (Aero Products, Division of Northrop Grumman International Services 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.