The Fan,axial Assy, cataloged under National Stock Number 4140-01-451-3764, 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 Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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,axial Assy |
| FSC / FSG | 4140 — Fans, Air Circulators, and Blower Equipment (FSG 41) |
| Manufacturers | Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit (CAGE 09004) |
| Parameter | Value |
|---|---|
| NSN | 4140-01-451-3764 |
| Primary Part Number | 505504 |
| Item Name | Fan,axial Assy |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 505504 | Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit (USA) |
| Reference | Meaning |
|---|---|
| 01161300 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4140-01-451-3764 is a Fan,axial Assy, manufactured by Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-451-3764 has 1 manufacturer part number on file: 505504 (Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit).
1 possible match (shared part number, not a government interchangeability claim): 2910-01-531-5653. 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.