The Muffler,exhaust, cataloged under National Stock Number 2990-01-438-8935, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Hydraulics International, Inc. Dba Hydraulics International Inc. Government technical data includes 7 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 | 2990-01-438-8935 |
| Primary Part Number | 94117-405 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Hydraulics International, Inc. Dba Hydraulics International Inc |
| Status | ACTIVE |
| Inlet Flange Shape | ROUND SINGLE INLET |
| Operating Position | HORIZONTAL |
| Coolant Type | AIR |
| Design Type | DRY |
| Overall Diameter | 12.000 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE ZINC |
| Material | ALUMINUM AND STEEL 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 |
|---|---|
| 94117-405 PRIMARY | Hydraulics International, Inc. Dba Hydraulics International Inc (USA) |
NSN 2990-01-438-8935 is a Muffler,exhaust, manufactured by Hydraulics International, Inc. Dba Hydraulics International Inc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-438-8935 has 1 manufacturer part number on file: 94117-405 (Hydraulics International, Inc. Dba Hydraulics International Inc).
Key specifications for 94117-405: Inlet Flange Shape: ROUND SINGLE INLET; Operating Position: HORIZONTAL; Coolant Type: AIR; Design Type: DRY. 7 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.