The Muffler,exhaust, cataloged under National Stock Number 2990-00-217-6053, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Donaldson Company, Inc.. Government technical data includes 15 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2990-00-217-6053 |
| Primary Part Number | FMM10-0469 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Donaldson Company, Inc. |
| Status | ACTIVE |
| Operating Position | UNIVERSAL |
| Inlet Outside Diameter | 3.000 INCHES NOMINAL SINGLE INLET IN |
| Inlet Location | LOCATED ON SIDE OF BODY |
| Coolant Type | AIR |
| Design Type | DRY |
| Overall Diameter | 12.000 INCHES NOMINAL IN |
| Inlet Projection Length | 1.125 INCHES NOMINAL SINGLE INLET IN |
| Outlet Outside Diameter | 4.000 INCHES NOMINAL FIRST OUTLET IN |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Body Shape | ROUND |
| Surface Treatment | ALUMINUM |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Projection Length | 3.000 INCHES NOMINAL FIRST OUTLET IN |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Outlet Location | LOCATED ON SIDE OF BODY |
| 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 |
|---|---|
| FMM10-0469 PRIMARY | Donaldson Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| SRU04-0199F | 5/9 Secondary reference Donaldson Company, Inc. |
| SASR712-3X4H-1 | 5/9 Secondary reference Harco Manufacturing Company Div Harco Manufacturing Company Inc |
| A600-2377 | 5/9 Secondary reference U.S. Government activity |
| SRU04-0199 | 5/9 Secondary reference Donaldson Company, Inc. |
| SX4 | 5/9 Secondary reference U.S. Government activity |
NSN 2990-00-217-6053 is a Muffler,exhaust, manufactured by Donaldson Company, Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-217-6053 has 1 manufacturer part number on file: FMM10-0469 (Donaldson Company, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5365-00-398-9324. Verify interchangeability with system specifications before substitution.
Key specifications for FMM10-0469: Operating Position: UNIVERSAL; Inlet Outside Diameter: 3.000 INCHES NOMINAL SINGLE INLET IN; Inlet Location: LOCATED ON SIDE OF BODY; Coolant Type: AIR. 15 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.