The Diffuser,air,vehicular Heating a, cataloged under National Stock Number 2540-01-558-3307, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 2540-01-558-3307 |
| Primary Part Number | 073373490 |
| Item Name | Diffuser,air,vehicular Heating a |
| 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 |
|---|---|
| 073373490 PRIMARY | Therma-Tech Engineering Inc Dba Thermatech Ar Lintern (USA) |
| 26KP266 | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 073373445 | 5/9 Secondary reference Therma-Tech Engineering Inc Dba Thermatech Ar Lintern |
| 26KP266 | 5/9 Secondary reference Oshkosh Corp |
NSN 2540-01-558-3307 is a Diffuser,air,vehicular Heating a, manufactured by Therma-Tech Engineering Inc Dba Thermatech Ar Lintern, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-01-558-3307 has 2 manufacturer part numbers on file: 073373490 (Therma-Tech Engineering Inc Dba Thermatech Ar Lintern), 26KP266 (Oshkosh Defense Llc).
Key specifications for 073373490: Part Name Assigned by Controlling Agency: PLENUM ASSEMBLY FLOOR DUCT LOUVER PLATE; End Item Identification: 2320-01-534-1103 M978A4 HEMTT; 2320-01-544-2244 AND 232001-544-2251 PLS (PALLETZED LOADING SYSTEM). 0 specifications are documented in the U.S. Government catalog.
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.