The Muffler,exhaust, cataloged under National Stock Number 2990-00-142-0076, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 16 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 | 2990-00-142-0076 |
| Primary Part Number | 8340935 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Operating Position | HORIZONTAL |
| Inlet Outside Diameter | 2.605 INCHES MINIMUM AND 2.715 INCHES MAXIMUM SINGLE INLET IN |
| Inlet Location | LOCATED 1-11/16 IN. C TO C FROM HORIZONTAL CENTER LINE LOCATED 7 IN. FROM END TO CENTER OF INLET IN |
| Coolant Type | AIR |
| Design Type | DRY |
| Outlet Inside Diameter | 2.515 INCHES MINIMUM AND 2.525 INCHES MAXIMUM FIRST OUTLET IN |
| Inlet Projection Length | 3.313 INCHES NOMINAL SINGLE INLET IN |
| Baffle Quantity | 1 |
| Muffler Design | BAFFLE |
| Outlet Outside Diameter | 2.605 INCHES MINIMUM AND 2.715 INCHES MAXIMUM FIRST OUTLET IN |
| Tube Quantity | 1 |
| Surface Treatment | ALUMINUM |
| Inlet Inside Diameter | 2.515 INCHES MINIMUM AND 2.525 INCHES MAXIMUM SINGLE INLET IN |
| Material | ALUMINUM OR STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Projection Length | 3.313 INCHES NOMINAL FIRST OUTLET IN |
| Outlet Location | LOCATED 4-1/16 IN. C TO C FROM HORIZONTAL CENTERLINE IN |
| 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 |
|---|---|
| 8340935 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 2990-00-142-0076 is a Muffler,exhaust, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-142-0076 has 1 manufacturer part number on file: 8340935 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8340935: Operating Position: HORIZONTAL; Overall Height: 6.125 INCHES NOMINAL IN; Inlet Outside Diameter: 2.605 INCHES MINIMUM AND 2.715 INCHES MAXIMUM SINGLE INLET IN; Inlet Location: LOCATED 1-11/16 IN. C TO C FROM HORIZONTAL CENTER LINE LOCATED 7 IN. FROM END TO CENTER OF INLET IN. 16 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.