The Impeller,fan,axial, cataloged under National Stock Number 4140-01-327-6265, 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 Engineered Cooling Systems Inc.. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | Impeller,fan,axial |
| FSC / FSG | 4140 — Fans, Air Circulators, and Blower Equipment (FSG 41) |
| Manufacturers | Engineered Cooling Systems Inc. (CAGE 45454); Deere & Company Dba Deere John Co (CAGE 75755) |
| Parameter | Value |
|---|---|
| NSN | 4140-01-327-6265 |
| Primary Part Number | 420964 |
| Item Name | Impeller,fan,axial |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Engineered Cooling Systems Inc. |
| Status | ACTIVE |
| Mounting Hole Quantity | 6 |
| Attachment Method | BOLT HOLE |
| Mounting Hole Diameter | 0.406 INCHES NOMINAL IN |
| Diameter | 27.940 INCHES MINIMUM AND 28.060 INCHES MAXIMUM IN |
| Blade Quantity | 8 |
| Mounting Bolt Circle Diameter | 4.700 INCHES NOMINAL IN |
| Hub Location | CENTER |
| Material | STEEL OVERALL |
| Rotation Direction for Which Designed | COUNTERCLOCKWISE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4140-01-327-6265 is a Impeller,fan,axial, manufactured by Engineered Cooling Systems Inc., classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-327-6265 has 2 manufacturer part numbers on file: 420964 (Engineered Cooling Systems Inc.), AT102567 (Deere & Company Dba Deere John Co).
Key specifications for 420964: Mounting Hole Quantity: 6; Attachment Method: BOLT HOLE; Mounting Hole Diameter: 0.406 INCHES NOMINAL IN; Diameter: 27.940 INCHES MINIMUM AND 28.060 INCHES MAXIMUM IN. 9 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.