The Impeller,fan,centrifugal, cataloged under National Stock Number 4140-00-409-6541, 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 Caterpillar Inc Div Caterpillar Defense. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Impeller,fan,centrifugal |
| FSC / FSG | 4140 — Fans, Air Circulators, and Blower Equipment (FSG 41) |
| Manufacturers | Peterson Tractor Co. (CAGE 02067); Caterpillar Inc Div Caterpillar Defense (CAGE 11083); Honeywell International Inc. Div Aerospace - Torrance (CAGE 70210) |
| Parameter | Value |
|---|---|
| NSN | 4140-00-409-6541 |
| Primary Part Number | 3S1422 |
| Item Name | Impeller,fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| 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 |
|---|---|
| 3S1422 | Peterson Tractor Co. (USA) |
| 3S1422 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| 404805-1 | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| Reference | Meaning |
|---|---|
| IPD3S4122 | 5/9 Secondary reference Industrial Parts Depot, Llc Dba Ipd |
| 404805-1 | 5/2 Secondary reference U.S. Government activity |
| 3S1422 | 5/9 Secondary reference Holt Bros |
NSN 4140-00-409-6541 is a Impeller,fan,centrifugal, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-00-409-6541 has 3 manufacturer part numbers on file: 3S1422 (Peterson Tractor Co.), 3S1422 (Caterpillar Inc Div Caterpillar Defense), 404805-1 (Honeywell International Inc. Div Aerospace - Torrance).
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.