The Fan,circulating, cataloged under National Stock Number 4140-01-538-3623, 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 Compaq Computer Corp.. Government technical data includes 1 specification, 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-538-3623 |
| Primary Part Number | 374552-001 |
| Item Name | Fan,circulating |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Compaq Computer Corp. |
| Status | ACTIVE |
| Prime Mover Type | ELECTRIC MOTOR |
| 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 |
|---|---|
| 348108-B21 | Compaq Computer Corp. (USA) |
| 374552-001 PRIMARY | Compaq Computer Corp. (USA) |
NSN 4140-01-538-3623 is a Fan,circulating, manufactured by Compaq Computer Corp., classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-538-3623 has 2 manufacturer part numbers on file: 348108-B21 (Compaq Computer Corp.), 374552-001 (Compaq Computer Corp.).
1 possible match (shared part number, not a government interchangeability claim): 4140-01-559-9085. Verify interchangeability with system specifications before substitution.
Key specifications for 374552-001: Special Features: INCLUDES THREE FANS; HOT-PLUG REDUNDANT FAN KIT 348108-B21 IS AFTERMARKET OPTION NOT AVAILABLE AFTER 31JAN08; Part Name Assigned by Controlling Agency: FAN, HPLUG 120MM MM; End Item Identification: HP PROLIANT ML570 GENERATION 3 (G3); Prime Mover Type: ELECTRIC MOTOR. 1 specification is 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.