The Muffler,exhaust, cataloged under National Stock Number 2990-01-295-6029, 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 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2990-01-295-6029 |
| Primary Part Number | MAM06-5044 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Donaldson Company, Inc. |
| Status | ACTIVE |
| Operating Position | HORIZONTAL |
| Inlet Location | LOCATED ON BOTTOM LEFT SIDE |
| Coolant Type | AIR |
| Design Type | DRY |
| Overall Diameter | 6.625 INCHES NOMINAL IN |
| Outlet Inside Diameter | 2.500 INCHES NOMINAL FIRST OUTLET IN |
| Muffler Design | STRAIGHT THROUGH |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Body Shape | ROUND |
| Inlet Inside Diameter | 2.500 INCHES NOMINAL SINGLE INLET IN |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Outlet Location | LOCATED ON RIGHT END |
| 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 |
|---|---|
| MAM06-5044 PRIMARY | Donaldson Company, Inc. (USA) |
| MAM06-59044 | Donaldson Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 845031A3001 | 7/2 Vendor item drawing reference Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service |
NSN 2990-01-295-6029 is a Muffler,exhaust, manufactured by Donaldson Company, Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-295-6029 has 2 manufacturer part numbers on file: MAM06-5044 (Donaldson Company, Inc.), MAM06-59044 (Donaldson Company, Inc.).
Key specifications for MAM06-5044: Operating Position: HORIZONTAL; Inlet Location: LOCATED ON BOTTOM LEFT SIDE; Coolant Type: AIR; Design Type: DRY. 13 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.