The Muffler,exhaust, cataloged under National Stock Number 2990-01-238-5745, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Ingersoll-Rand Co Material Handling Div. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29) |
| Manufacturers | Ingersoll-Rand Co Material Handling Div (CAGE 06550) |
| Parameter | Value |
|---|---|
| NSN | 2990-01-238-5745 |
| Primary Part Number | 50590 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Ingersoll-Rand Co Material Handling Div |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 9400 PIECE 48 | Ingersoll-Rand Co Material Handling Div (USA) |
| 50590 PRIMARY | Ingersoll-Rand Co Material Handling Div (USA) |
| Reference | Meaning |
|---|---|
| MB-088-A | C/1 Advisory reference — outside the item-of-supply concept Norgren C a Co |
NSN 2990-01-238-5745 is a Muffler,exhaust, manufactured by Ingersoll-Rand Co Material Handling Div, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-238-5745 has 2 manufacturer part numbers on file: 9400 PIECE 48 (Ingersoll-Rand Co Material Handling Div), 50590 (Ingersoll-Rand Co Material Handling Div).
1 possible match (shared part number, not a government interchangeability claim): 6110-01-526-0193. Verify interchangeability with system specifications before substitution.
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.