The Muffler,intake, cataloged under National Stock Number 2990-01-531-1774, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Burgess Manning, Inc. Dba Skimovex Usa. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2990-01-531-1774 |
| Primary Part Number | S44-0250-008 |
| Item Name | Muffler,intake |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Burgess Manning, Inc. Dba Skimovex Usa |
| Status | ACTIVE |
| Inlet Location | CENTRALLY LOCATED IN END |
| Overall Diameter | 1219.2 MILLIMETERS NOMINAL MM |
| Inlet Projection Length | 152.4 MILLIMETERS NOMINAL MM |
| Inlet Flange Mounting Hole Diameter | 1238.0 MILLIMETERS NOMINAL LOCATION NOT OTHERWISE SPECIFIED MM |
| Muffler Design | STRAIGHT THROUGH |
| Inlet Connection Type | FLANGE LOCATION NOT OTHERWISE SPECIFIED |
| Body Shape | ROUND |
| Material | STEEL CORROSION RESISTING LOCATION NOT OTHERWISE SPECIFIED |
| 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 |
|---|---|
| S44-0250-008 PRIMARY | Burgess Manning, Inc. Dba Skimovex Usa (USA) |
| Reference | Meaning |
|---|---|
| 52-00-10 | D/9 Drawing number reference only Naval Sea Systems Command |
| 52-00-10 FIND NO 56 | 5/9 Secondary reference Huntington Ingalls Incorporated Div Ingalls Shipbuilding |
| LP-M-25902 | 5/9 Secondary reference Huntington Ingalls Incorporated Div Ingalls Shipbuilding |
NSN 2990-01-531-1774 is a Muffler,intake, manufactured by Burgess Manning, Inc. Dba Skimovex Usa, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-531-1774 has 1 manufacturer part number on file: S44-0250-008 (Burgess Manning, Inc. Dba Skimovex Usa).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-707-5301. Verify interchangeability with system specifications before substitution.
Key specifications for S44-0250-008: Inlet Location: CENTRALLY LOCATED IN END; Overall Diameter: 1219.2 MILLIMETERS NOMINAL MM; Inlet Projection Length: 152.4 MILLIMETERS NOMINAL MM; Overall Length: 2743.0 MILLIMETERS NOMINAL MM. 8 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.