The Muffler,exhaust, cataloged under National Stock Number 2990-01-609-6743, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is John Deere Construction & Forestry Company. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29) |
| Manufacturers | John Deere Construction & Forestry Company (CAGE 1QME2); Hitachi Construction Machinery Aust Australia Pty Ltd Hitachi Construction Machinery (CAGE Z0944); Rdo Equipment Rdo Equipment Pty Ltd (CAGE ZB955) |
| Parameter | Value |
|---|---|
| NSN | 2990-01-609-6743 |
| Primary Part Number | AT334910 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | John Deere Construction & Forestry Company |
| 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 |
|---|---|
| AT334910 PRIMARY | John Deere Construction & Forestry Company (USA) |
| AT334910 | Hitachi Construction Machinery Aust Australia Pty Ltd Hitachi Construction Machinery (AUS) |
| AT334910 | Rdo Equipment Rdo Equipment Pty Ltd (AUS) |
| Reference | Meaning |
|---|---|
| AT334910 | 3/9 Design control — primary reference John Deere Construction & Forestry Company Div Direct Governmental Sales |
NSN 2990-01-609-6743 is a Muffler,exhaust, manufactured by John Deere Construction & Forestry Company, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-609-6743 has 3 manufacturer part numbers on file: AT334910 (John Deere Construction & Forestry Company), AT334910 (Hitachi Construction Machinery Aust Australia Pty Ltd Hitachi Construction Machinery), AT334910 (Rdo Equipment Rdo Equipment Pty Ltd).
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.