The Muffler,exhaust, cataloged under National Stock Number 2990-01-252-3855, 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 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2990-01-252-3855 |
| Primary Part Number | MZM065034 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Donaldson Company, Inc. |
| Status | ACTIVE |
| Inlet Flange Shape | ROUND SINGLE INLET |
| Operating Position | HORIZONTAL |
| Inlet Location | CENTRALLY LOCATED IN END SECTION OF BODY |
| Coolant Type | AIR |
| Outlet Flange Mounting Provision and Quantity | 2 HOLES FIRST OUTLET |
| Design Type | DRY |
| Baffle Quantity | 1 |
| Muffler Design | STRAIGHT THROUGH W/BAFFLE |
| Outlet Flange Shape | ROUND FIRST OUTLET |
| Tube Quantity | 2 |
| Inlet Connection Type | FLANGE SINGLE INLET |
| Body Shape | RECTANGULAR |
| Inlet Flange Mounting Provision and Quantity | 1 HOLES SINGLE INLET |
| Outlet Connection Type | FLANGE FIRST OUTLET |
| 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 |
|---|---|
| MZM065034 PRIMARY | Donaldson Company, Inc. (USA) |
| 7-642-000075 PRIMARY | Grove U.s. Llc Dba Grove Us Llc (USA) |
| Reference | Meaning |
|---|---|
| MAM06-5054 | 5/9 Secondary reference Donaldson Company, Inc. |
NSN 2990-01-252-3855 is a Muffler,exhaust, manufactured by Donaldson Company, Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-252-3855 has 2 manufacturer part numbers on file: MZM065034 (Donaldson Company, Inc.), 7-642-000075 (Grove U.s. Llc Dba Grove Us Llc).
Key specifications for MZM065034: Inlet Flange Shape: ROUND SINGLE INLET; Operating Position: HORIZONTAL; Inlet Location: CENTRALLY LOCATED IN END SECTION OF BODY; Coolant Type: AIR. 14 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.