The Impeller,fan,axial, cataloged under National Stock Number 2930-01-398-5606, is classified within Federal Supply Class 2930 (Engine Cooling System Components, Nonaircraft) of the Engine Accessories 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 2930-01-398-5606 |
| Primary Part Number | 421056 |
| Item Name | Impeller,fan,axial |
| FSC / FSG | 2930 / 29 — Engine Cooling System Components, Nonaircraft |
| Manufacturer | Engineered Cooling Systems Inc. |
| Status | ACTIVE |
| Mounting Hole Quantity | 4 |
| Style Designator | ROUNDED TIP |
| Attachment Method | BOLT HOLE |
| Mounting Hole Diameter | 8.640 MILLIMETERS NOMINAL MM |
| Diameter | 381.0 MILLIMETERS NOMINAL MM |
| Blade Shape | STRAIGHT |
| Blade Quantity | 6 |
| Mounting Bolt Circle Diameter | 82.55 MILLIMETERS NOMINAL MM |
| Hub Location | CENTER |
| 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 |
|---|---|
| 421056 PRIMARY | Engineered Cooling Systems Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3299582 | 5/2 Secondary reference U.S. Government activity |
NSN 2930-01-398-5606 is a Impeller,fan,axial, manufactured by Engineered Cooling Systems Inc., classified under FSC 2930, Engine Cooling System Components, Nonaircraft. Status: active.
NSN 2930-01-398-5606 has 1 manufacturer part number on file: 421056 (Engineered Cooling Systems Inc.).
Key specifications for 421056: Mounting Hole Quantity: 4; Style Designator: ROUNDED TIP; Attachment Method: BOLT HOLE; Mounting Hole Diameter: 8.640 MILLIMETERS NOMINAL MM. 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.