The Muffler,exhaust, cataloged under National Stock Number 2990-01-463-3701, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 2990-01-463-3701 |
| Primary Part Number | 803-6915568-20.9 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| 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 |
|---|---|
| MFT38 | I S I Fluid Power Inc (USA) |
| 803-6915568-20.9 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| MFT-38 | C/1 Advisory reference — outside the item-of-supply concept Isi Automation |
| MFT38 | 5/9 Secondary reference Ingersoll-Rand Company Dba Ingersoll-Rand |
NSN 2990-01-463-3701 is a Muffler,exhaust, manufactured by Naval Sea Systems Command, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-463-3701 has 2 manufacturer part numbers on file: MFT38 (I S I Fluid Power Inc), 803-6915568-20.9 (Naval Sea Systems Command).
Key specifications for 803-6915568-20.9: Special Features: USED ON WORTHINGTON COMPRESSOR,DRESSER RAND CO.. 0 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.