The Fan,ventilating, cataloged under National Stock Number 4140-01-678-4491, 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 Supreme Integrated Technology, Inc. Dba C.s. Controls. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Fan,ventilating |
| FSC / FSG | 4140 — Fans, Air Circulators, and Blower Equipment (FSG 41) |
| Manufacturers | Supreme Integrated Technology, Inc. Dba C.s. Controls (CAGE 0BJ09) |
| Parameter | Value |
|---|---|
| NSN | 4140-01-678-4491 |
| Primary Part Number | 4026E-017 |
| Item Name | Fan,ventilating |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Supreme Integrated Technology, Inc. Dba C.s. Controls |
| 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 |
|---|---|
| PL4026E001 REV B ITEM 017 | Supreme Integrated Technology, Inc. Dba C.s. Controls (USA) |
| 4026E-017 PRIMARY | Supreme Integrated Technology, Inc. Dba C.s. Controls (USA) |
| Reference | Meaning |
|---|---|
| PL4026E001 | D/9 Drawing number reference only Supreme Integrated Technology, Inc. Dba C.s. Controls |
NSN 4140-01-678-4491 is a Fan,ventilating, manufactured by Supreme Integrated Technology, Inc. Dba C.s. Controls, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-678-4491 has 2 manufacturer part numbers on file: PL4026E001 REV B ITEM 017 (Supreme Integrated Technology, Inc. Dba C.s. Controls), 4026E-017 (Supreme Integrated Technology, Inc. Dba C.s. Controls).
1 possible match (shared part number, not a government interchangeability claim): 4310-01-678-4492. Verify interchangeability with system specifications before substitution.
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.