The Impeller,fan,centrifugal, cataloged under National Stock Number 4140-01-653-4655, 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 The Entwistle Company Llc. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-653-4655 |
| Primary Part Number | 0418C09-0248-01 |
| Item Name | Impeller,fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | The Entwistle Company Llc |
| Status | ACTIVE |
| Style Designator | STRAIGHT RADIAL W/ BACK PLATE |
| Diameter | 26.000 INCHES NOMINAL IN |
| Material | PLASTIC POLYAMIDE NYLON BLADE |
| Rotation Direction for Which Designed | CLOCKWISE |
| 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 |
|---|---|
| 0418C09-0248-01 PRIMARY | The Entwistle Company Llc (USA) |
| 440100-26 PRIMARY | American Cooling Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 0418C09-0438 | 7/2 Vendor item drawing reference The Entwistle Company Llc |
NSN 4140-01-653-4655 is a Impeller,fan,centrifugal, manufactured by The Entwistle Company Llc, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-653-4655 has 2 manufacturer part numbers on file: 0418C09-0248-01 (The Entwistle Company Llc), 440100-26 (American Cooling Systems Llc).
Key specifications for 0418C09-0248-01: Style Designator: STRAIGHT RADIAL W/ BACK PLATE; Diameter: 26.000 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: FAN, ENGINE; Material: PLASTIC POLYAMIDE NYLON BLADE. 4 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.