The Muffler,exhaust, cataloged under National Stock Number 2990-01-486-0574, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Essex Electro Engineers Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-486-0574 |
| Primary Part Number | A624-2503 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Essex Electro Engineers Inc |
| Status | ACTIVE |
| Specific Use | NC-10 TOWABLE GROUND POWER UNIT |
| 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 |
|---|---|
| A624-2503 PRIMARY | Essex Electro Engineers Inc (USA) |
| Reference | Meaning |
|---|---|
| B624-2503 | C/1 Advisory reference — outside the item-of-supply concept Essex Electro Engineers Inc |
NSN 2990-01-486-0574 is a Muffler,exhaust, manufactured by Essex Electro Engineers Inc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-486-0574 has 1 manufacturer part number on file: A624-2503 (Essex Electro Engineers Inc).
Key specifications for A624-2503: Specific Use: NC-10 TOWABLE GROUND POWER UNIT; End Item Identification: CONSOLIDATED GROUND SUPPORT EQUIPMENT. 1 specification is 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.