The Muffler,exhaust, cataloged under National Stock Number 2990-00-006-0117, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Grove U.s. Llc Dba Grove Us Llc. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-00-006-0117 |
| Primary Part Number | 2-138-8-00052 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Grove U.s. Llc Dba Grove Us Llc |
| Status | ACTIVE |
| Inlet Location | CENTERED ON END OF BODY |
| Coolant Type | AIR |
| Design Type | DRY |
| Overall Diameter | 8.500 INCHES NOMINAL IN |
| Inlet Thread Location | EXTERNAL SINGLE INLET |
| Inlet Projection Length | 3.000 INCHES NOMINAL SINGLE INLET IN |
| Muffler Design | BAFFLE |
| Outlet Outside Diameter | 3.375 INCHES NOMINAL FIRST OUTLET IN |
| Thread Direction | RIGHT-HAND SINGLE INLET |
| Inlet Thread Size | 3-1/2-8 SINGLE INLET |
| Inlet Thread Series Designator | NPT SINGLE INLET |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Projection Length | 13.000 INCHES NOMINAL FIRST OUTLET IN |
| Outlet Location | CENTERED ON END 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 |
|---|---|
| 2-138-8-00052 PRIMARY | Grove U.s. Llc Dba Grove Us Llc (USA) |
NSN 2990-00-006-0117 is a Muffler,exhaust, manufactured by Grove U.s. Llc Dba Grove Us Llc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-006-0117 has 1 manufacturer part number on file: 2-138-8-00052 (Grove U.s. Llc Dba Grove Us Llc).
Key specifications for 2-138-8-00052: Inlet Location: CENTERED ON END OF BODY; Coolant Type: AIR; Design Type: DRY; Overall Diameter: 8.500 INCHES NOMINAL IN. 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.