The Duct,air Outlet, cataloged under National Stock Number 4520-01-083-5909, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Wheeler Fleet Solutions, Co.. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4520-01-083-5909 |
| Primary Part Number | 883-74190-1 |
| Item Name | Duct,air Outlet |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Wheeler Fleet Solutions, Co. |
| Status | ACTIVE |
| FSC Application Data | HEATER,TRAILER MOUNTED,HDU-13M |
| General Characteristics Item Description | ASSY OF DUCT 1,8.000 IN. AIR DUCT ASSY 1,AIR OUTLET HOSE CONNECTOR 1,FEMALE END RETAINER 1,MALE END RETAINER 1 IN |
| 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 |
|---|---|
| 883-74190-1 | Wheeler Fleet Solutions, Co. (USA) |
| Reference | Meaning |
|---|---|
| 74190-1 | 3/2 Design control — primary reference U.S. Government activity |
| 74190-1 | 5/9 Secondary reference Drs Environmental Systems Inc |
| 4520PL1076480 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 74190-1 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4520-01-083-5909 is a Duct,air Outlet, manufactured by Wheeler Fleet Solutions, Co., classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-083-5909 has 1 manufacturer part number on file: 883-74190-1 (Wheeler Fleet Solutions, Co.).
1 possible match (shared part number, not a government interchangeability claim): 1650-01-228-4619. Verify interchangeability with system specifications before substitution.
Key specifications for 883-74190-1: FSC Application Data: HEATER,TRAILER MOUNTED,HDU-13M; General Characteristics Item Description: ASSY OF DUCT 1,8.000 IN. AIR DUCT ASSY 1,AIR OUTLET HOSE CONNECTOR 1,FEMALE END RETAINER 1,MALE END RETAINER 1 IN. 2 specifications are 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.