The Housing,centrifugal Fan, cataloged under National Stock Number 4140-00-181-3547, 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 Grimes Aerospace Company. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Housing,centrifugal Fan |
| FSC / FSG | 4140 — Fans, Air Circulators, and Blower Equipment (FSG 41) |
| Manufacturers | Grimes Aerospace Company (CAGE 72914) |
| Parameter | Value |
|---|---|
| NSN | 4140-00-181-3547 |
| Primary Part Number | 197802-1 |
| Item Name | Housing,centrifugal Fan |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 197802-1 PRIMARY | Grimes Aerospace Company (USA) |
| Reference | Meaning |
|---|---|
| 209-070-586-1 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 4140-00-181-3547 is a Housing,centrifugal Fan, manufactured by Grimes Aerospace Company, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-00-181-3547 has 1 manufacturer part number on file: 197802-1 (Grimes Aerospace Company).
2 possible matches (shared part number, not a government interchangeability claim): 5950-01-267-3134, 6150-01-458-2616. 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.
NSN 4140-00-181-3547 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.