The Muffler,exhaust, cataloged under National Stock Number 2990-01-556-1872, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Centek Industries, Inc.. 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 | 2990-01-556-1872 |
| Primary Part Number | 1500027 |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Centek Industries, Inc. |
| Status | ACTIVE |
| Inlet Flange Shape | ROUND SINGLE INLET |
| Operating Position | VERTICAL |
| Inlet Location | CENTRALLY LOCATED ON SIDE SECTION OF ROUND BODY |
| Coolant Type | WATER |
| Design Type | WET |
| Overall Diameter | 10.040 INCHES NOMINAL IN |
| Inlet Projection Length | 2.500 INCHES NOMINAL SINGLE INLET IN |
| Inlet Flange Mounting Hole Diameter | 2.000 INCHES NOMINAL SINGLE INLET IN |
| Muffler Design | DIRECTIONAL VANE |
| Outlet Flange Shape | ROUND FIRST OUTLET |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Body Shape | ROUND |
| Outlet Flange Mounting Hole Diameter | 2.000 INCHES NOMINAL FIRST OUTLET IN |
| Outlet Projection Length | 2.500 INCHES NOMINAL FIRST OUTLET IN |
| Outlet Connection Type | UNTHREADED FIRST OUTLET |
| Outlet Location | LOCATED AT THE REAR OF THE TOP SECTION FROM THE INLET LOCATION |
| 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 |
|---|---|
| 1500027 PRIMARY | Centek Industries, Inc. (USA) |
NSN 2990-01-556-1872 is a Muffler,exhaust, manufactured by Centek Industries, Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-556-1872 has 1 manufacturer part number on file: 1500027 (Centek Industries, Inc.).
Key specifications for 1500027: Inlet Flange Shape: ROUND SINGLE INLET; Operating Position: VERTICAL; Overall Height: 10.160 INCHES NOMINAL IN; Inlet Location: CENTRALLY LOCATED ON SIDE SECTION OF ROUND BODY. 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.