The Pipe,exhaust, cataloged under National Stock Number 2990-01-577-5449, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-577-5449 |
| Primary Part Number | 3820409 |
| Item Name | Pipe,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| End Item Model Number | M-ATV |
| End Item Source | 45152 |
| Design Form | WELDMENT |
| End Item Name | MINE RESISTANT VEHICLE |
| Material | STEEL CORROSION RESISTING |
| Usage Location | EXHAUST PIPE |
| 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 |
|---|---|
| 3820409 PRIMARY | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 3820409 | 5/9 Secondary reference Oshkosh Corp |
NSN 2990-01-577-5449 is a Pipe,exhaust, manufactured by Oshkosh Defense Llc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-577-5449 has 1 manufacturer part number on file: 3820409 (Oshkosh Defense Llc).
Key specifications for 3820409: End Item Model Number: M-ATV; End Item Source: 45152; Design Form: WELDMENT; End Item Name: MINE RESISTANT VEHICLE. 6 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.