The Muffler,exhaust, cataloged under National Stock Number 2990-01-577-4509, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Ingersoll-Rand Company Dba Ingersoll-Rand. Government technical data includes 3 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 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-577-4509 |
| Primary Part Number | 93092 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Ingersoll-Rand Company Dba Ingersoll-Rand |
| Status | ACTIVE |
| Muffler Design | LOUVER |
| Body Shape | IRREGULAR |
| Material | PLASTIC 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 |
|---|---|
| 93092 PRIMARY | Ingersoll-Rand Company Dba Ingersoll-Rand (USA) |
NSN 2990-01-577-4509 is a Muffler,exhaust, manufactured by Ingersoll-Rand Company Dba Ingersoll-Rand, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-577-4509 has 1 manufacturer part number on file: 93092 (Ingersoll-Rand Company Dba Ingersoll-Rand).
2 possible matches (shared part number, not a government interchangeability claim): 5905-01-628-7024, 5305-01-682-5465. Verify interchangeability with system specifications before substitution.
Key specifications for 93092: Muffler Design: LOUVER; Body Shape: IRREGULAR; Part Name Assigned by Controlling Agency: MUFFLER EXHAUST; End Item Identification: AIR MOTOR DIAPHRAGM PUMP. 3 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.