The Muffler,exhaust, cataloged under National Stock Number 2990-01-149-6783, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Kovatch Corp.. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-149-6783 |
| Primary Part Number | K-500-CH-0356 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Kovatch Corp. |
| Status | ACTIVE |
| Operating Position | HORIZONTAL |
| Coolant Type | AIR |
| Design Type | DRY |
| Body Shape | ROUND |
| 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 |
|---|---|
| K-500-CH-0356 | Kovatch Corp. (USA) |
| Reference | Meaning |
|---|---|
| 2ME 390 | 3/9 Design control — primary reference U.S. Government activity |
| 25035028 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2990-01-149-6783 is a Muffler,exhaust, manufactured by Kovatch Corp., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-149-6783 has 1 manufacturer part number on file: K-500-CH-0356 (Kovatch Corp.).
Key specifications for K-500-CH-0356: Operating Position: HORIZONTAL; Coolant Type: AIR; Design Type: DRY; Body Shape: ROUND. 4 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.