The Muffler,exhaust, cataloged under National Stock Number 2990-01-132-9173, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2990-01-132-9173 |
| Primary Part Number | MAM10-0417 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Donaldson Company, Inc. |
| Status | ACTIVE |
| Operating Position | HORIZONTAL |
| Inlet Location | LOCATED 5.500 IN. FROM END ON SIDE OF BODY IN |
| Coolant Type | AIR |
| Design Type | DRY |
| Overall Diameter | 10.120 INCHES NOMINAL IN |
| Outlet Inside Diameter | 5.030 INCHES NOMINAL FIRST OUTLET IN |
| Inlet Projection Length | 2.940 INCHES NOMINAL SINGLE INLET IN |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Body Shape | ROUND |
| Surface Treatment | ALUMINUM ALLOY |
| Inlet Inside Diameter | 5.030 INCHES NOMINAL SINGLE INLET IN |
| Material | STEEL CORROSION RESISTING LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Projection Length | 3.500 INCHES NOMINAL FIRST OUTLET IN |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Outlet Location | CENTRALLY LOCATED IN END SECTION 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 |
|---|---|
| MAM10-0417 PRIMARY | Donaldson Company, Inc. (USA) |
| 1309000 PRIMARY | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 1309000 | 5/9 Secondary reference Oshkosh Corp |
NSN 2990-01-132-9173 is a Muffler,exhaust, manufactured by Donaldson Company, Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-132-9173 has 2 manufacturer part numbers on file: MAM10-0417 (Donaldson Company, Inc.), 1309000 (Oshkosh Defense Llc).
Key specifications for MAM10-0417: Operating Position: HORIZONTAL; Inlet Location: LOCATED 5.500 IN. FROM END ON SIDE OF BODY IN; Coolant Type: AIR; Design Type: DRY. 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.