The Impeller,fan,axial, cataloged under National Stock Number 4140-00-792-8398, 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 Timken Aerospace, Inc Dba Torrington Product. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4140-00-792-8398 |
| Primary Part Number | 20 |
| Item Name | Impeller,fan,axial |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Timken Aerospace, Inc Dba Torrington Product |
| Status | ACTIVE |
| Mounting Hole Quantity | 4 |
| Style Designator | REVERSIBLE ROUNDED TIP |
| Attachment Method | BOLT HOLE |
| Mounting Hole Diameter | 0.200 INCHES NOMINAL IN |
| Diameter | 7.000 INCHES NOMINAL IN |
| Blade Quantity | 5 |
| Mounting Bolt Circle Diameter | 1.062 INCHES NOMINAL IN |
| Hub Location | FRONT |
| Material | ALUMINUM ALLOY OVERALL |
| Rotation Direction for Which Designed | CLOCKWISE OR COUNTERCLOCKWISE |
| 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 |
|---|---|
| 20 PRIMARY | Timken Aerospace, Inc Dba Torrington Product (USA) |
| Reference | Meaning |
|---|---|
| 666143-703 | 5/9 Secondary reference Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc |
NSN 4140-00-792-8398 is a Impeller,fan,axial, manufactured by Timken Aerospace, Inc Dba Torrington Product, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-00-792-8398 has 1 manufacturer part number on file: 20 (Timken Aerospace, Inc Dba Torrington Product).
Key specifications for 20: Mounting Hole Quantity: 4; Style Designator: REVERSIBLE ROUNDED TIP; Attachment Method: BOLT HOLE; Mounting Hole Diameter: 0.200 INCHES NOMINAL IN. 10 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.