The Muffler,exhaust, cataloged under National Stock Number 2990-00-701-3885, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Fnss Savunma Sistemleri Anonim Sirketi. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-00-701-3885 |
| Primary Part Number | 8737992 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Fnss Savunma Sistemleri Anonim Sirketi |
| Status | ACTIVE |
| Operating Position | VERTICAL |
| FSC Application Data | EXHAUST SYSTEM,ENGINE NON-AIRCRAFT |
| Inlet Outside Diameter | 4.000 INCHES NOMINAL SINGLE INLET IN |
| Inlet Location | CENTRALLY LOCATED IN END SECTION OF BODY |
| Coolant Type | AIR |
| Design Type | DRY |
| Overall Diameter | 8.000 INCHES NOMINAL IN |
| Outlet Inside Diameter | 3.870 INCHES NOMINAL FIRST OUTLET IN |
| Inlet Projection Length | 1.000 INCHES NOMINAL SINGLE INLET IN |
| Baffle Quantity | 2 |
| Material Document and Classification | MIL-T-8606, TYPE 1, COMP G347 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Muffler Design | BAFFLE |
| Outlet Outside Diameter | 4.000 INCHES NOMINAL FIRST OUTLET IN |
| Tube Quantity | 1 |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Body Shape | ROUND |
| Surface Treatment | ALUMINUM |
| Inlet Inside Diameter | 3.870 INCHES NOMINAL SINGLE INLET IN |
| Material | STEEL COMP 347 LOCATION NOT OTHERWISE SPECIFIED |
| Outlet Projection Length | 8.500 INCHES NOMINAL FIRST OUTLET IN |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Outlet Location | ON OUTSIDE OF BODY 21.437 IN. FROM END OF BODY 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 |
|---|---|
| 8737992 | Fnss Savunma Sistemleri Anonim Sirketi (TUR) |
| 8737992 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 2990007013885 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| MILT806TYPE1 | 4/1 Identification reference U.S. Government activity |
NSN 2990-00-701-3885 is a Muffler,exhaust, manufactured by Fnss Savunma Sistemleri Anonim Sirketi, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-701-3885 has 2 manufacturer part numbers on file: 8737992 (Fnss Savunma Sistemleri Anonim Sirketi), 8737992 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8737992: Operating Position: VERTICAL; FSC Application Data: EXHAUST SYSTEM,ENGINE NON-AIRCRAFT; Inlet Outside Diameter: 4.000 INCHES NOMINAL SINGLE INLET IN; Inlet Location: CENTRALLY LOCATED IN END SECTION OF BODY. 22 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.