The Impeller,fan,centrifugal, cataloged under National Stock Number 4140-01-367-3108, 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 Fm Af, Llc Dba American Fan Company. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-367-3108 |
| Primary Part Number | 7W-43565 ITEM NO. 9 |
| Item Name | Impeller,fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Fm Af, Llc Dba American Fan Company |
| Status | ACTIVE |
| Style Designator | CURVED BLADES SINGLE WIDTH |
| Attachment Method | KEYWAY AND SETSCREW |
| Diameter | 20.250 INCHES NOMINAL IN |
| Blade Quantity | 12 |
| Width | 7.812 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 BLADE |
| 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 |
| Part Number | Manufacturer |
|---|---|
| R1-41339 PC. NO. 21 CCW | Fm Af, Llc Dba American Fan Company (USA) |
| 7W-43565 ITEM NO. 9 PRIMARY | Fm Af, Llc Dba American Fan Company (USA) |
| Reference | Meaning |
|---|---|
| R1-41339 PC. NO. 21 CCW | 5/9 Secondary reference New Philadelphia Fan Co Buffalo Forge Marine Fans |
| 7W-43565 ITEM NO. 9 | 3/9 Design control — primary reference New Philadelphia Fan Co Buffalo Forge Marine Fans |
NSN 4140-01-367-3108 is a Impeller,fan,centrifugal, manufactured by Fm Af, Llc Dba American Fan Company, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-367-3108 has 2 manufacturer part numbers on file: R1-41339 PC. NO. 21 CCW (Fm Af, Llc Dba American Fan Company), 7W-43565 ITEM NO. 9 (Fm Af, Llc Dba American Fan Company).
Key specifications for 7W-43565 ITEM NO. 9: Style Designator: CURVED BLADES SINGLE WIDTH; Attachment Method: KEYWAY AND SETSCREW; Diameter: 20.250 INCHES NOMINAL IN; Blade Quantity: 12. 7 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.