The Ventilator,air Circulating, cataloged under National Stock Number 2540-01-577-5415, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. The manufacturer of record is Therma-Tech Engineering Inc Dba Thermatech Ar Lintern. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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. Unit of issue: EA.
| Item Name | Ventilator,air Circulating |
| FSC / FSG | 2540 — Vehicular Furniture and Accessories (FSG 25) |
| Manufacturers | Oshkosh Defense Llc (CAGE 75Q65); Therma-Tech Engineering Inc Dba Thermatech Ar Lintern (CAGE 5N978) |
| Parameter | Value |
|---|---|
| NSN | 2540-01-577-5415 |
| Primary Part Number | 073345214 |
| Item Name | Ventilator,air Circulating |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Manufacturer | Therma-Tech Engineering Inc Dba Thermatech Ar Lintern |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 3933840 | Oshkosh Defense Llc (USA) |
| 073345214 PRIMARY | Therma-Tech Engineering Inc Dba Thermatech Ar Lintern (USA) |
| Reference | Meaning |
|---|---|
| 1604650 | 5/9 Secondary reference Oshkosh Corp |
| 3815963 | 5/9 Secondary reference Oshkosh Corp |
| 078845214 | 5/9 Secondary reference Thermo Jarrell Ash Corp Baird Div |
| 3933840 | 7/9 Vendor item drawing reference Oshkosh Corp |
NSN 2540-01-577-5415 is a Ventilator,air Circulating, manufactured by Therma-Tech Engineering Inc Dba Thermatech Ar Lintern, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-01-577-5415 has 2 manufacturer part numbers on file: 3933840 (Oshkosh Defense Llc), 073345214 (Therma-Tech Engineering Inc Dba Thermatech Ar Lintern).
1 possible match (shared part number, not a government interchangeability claim): 5325-01-581-9524. Verify interchangeability with system specifications before substitution.
Possible hazard — SDS may be required (DLA HMIC P). 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.